{"id":3548,"date":"2026-09-18T18:39:20","date_gmt":"2026-09-18T18:39:20","guid":{"rendered":"https:\/\/www.rattech.com\/hvor-stor-er-en-rotte\/"},"modified":"2026-09-18T18:39:21","modified_gmt":"2026-09-18T18:39:21","slug":"hvor-stor-er-en-rotte","status":"publish","type":"post","link":"https:\/\/www.rattech.com\/es\/hvor-stor-er-en-rotte\/","title":{"rendered":"Hvor stor er en rotte? L\u00e6ngde, v\u00e6gt og de store myter"},"content":{"rendered":"<style id=\"rt-blog-enrich\">:root{ --rt-navy:#1D3557;--rt-navy-d:#143852;--rt-navy-ink:#0f2740; --rt-ink:#1e293b;--rt-muted:#5b6b80; --rt-orange:#F28023;--rt-orange-d:#d76d13;--rt-peach:#FFBC7D; --rt-bg:#F4F6FA;--rt-bg2:#eaeef6;--rt-paper:#FBFCFE;--rt-line:#DDE4EE;--rt-line-d:#C7D1E0; --rt-font:'Montserrat',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif; --rt-body:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif; --rt-sh-sm:0 2px 10px rgba(15,39,64,.06); --rt-sh:0 12px 30px rgba(15,39,64,.10); --rt-sh-lg:0 26px 60px rgba(15,39,64,.16); --rt-dots:radial-gradient(rgba(29,53,87,.055) 1.1px,transparent 1.1px); } .elementor-widget-theme-post-title{position:relative;} .elementor-widget-theme-post-title::before{ content:\"\";display:block;width:58px;height:5px;border-radius:3px; background:linear-gradient(90deg,var(--rt-orange),var(--rt-peach));margin:0 0 .8rem;} .elementor-widget-theme-post-title .elementor-heading-title{ font-family:var(--rt-font)!important;font-weight:800;color:var(--rt-navy-ink); 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margin:0 0 1em;overflow:hidden;box-shadow:var(--rt-sh-sm);} .rt-main tbody td{display:flex;justify-content:space-between;gap:1.1em;align-items:baseline; text-align:right;padding:.65em .95em;border-top:1px solid var(--rt-bg2);} .rt-main tbody td::before{content:attr(data-label);font-family:var(--rt-font);font-weight:700; color:var(--rt-navy);text-align:left;flex:0 0 42%;font-size:.86rem;} .rt-main tbody td:first-child{display:block;text-align:left; background:linear-gradient(180deg,var(--rt-navy),var(--rt-navy-d));color:#fff;font-family:var(--rt-font); font-weight:700;border-top:none;padding:.75em .95em;} .rt-main tbody td:first-child::before{content:none;} }\n<\/style>\n<div class=\"rt-article\">\n<div class=\"rt-main\">\n<p>En voksen brun rotte m\u00e5ler omkring 45 cm fra snude til halespids, hvoraf de cirka 20 cm er hale, og den vejer 200-400 gram. L\u00e6ngdem\u00e5let er Bolius&#8217;, v\u00e6gten er Milj\u00f8styrelsens. Kroppen alene fylder dermed cirka 25 cm, hanner er de st\u00f8rste og ligger typisk p\u00e5 250-300 gram, og enkelte danske rotter er dokumenteret over et halvt kilo &#8211; men der findes ingen s\u00e6rskilt k\u00e6mperotte-art i Danmark.<\/p>\n<h2>Kort fortalt om rottens st\u00f8rrelse<\/h2>\n<p>En brun rotte er cirka 45 cm lang og vejer 200-400 gram. Det er de tal, resten af artiklen bygger p\u00e5:<\/p>\n<ul>\n<li>Samlet l\u00e6ngde: ca. 45 cm, heraf ca. 20 cm hale (Bolius).<\/li>\n<li>V\u00e6gt: 200-400 gram for den brune rotte (Milj\u00f8styrelsen); hanner typisk 250-300 gram (Bolius).<\/li>\n<li>Eksemplarer over 500 gram er dokumenteret i Danmark, men er undtagelsen (Bolius).<\/li>\n<li>St\u00f8rrelsen afg\u00f8res af alder, k\u00f8n og f\u00f8deadgang &#8211; ikke af rottegift.<\/li>\n<li>En rotte kan trods st\u00f8rrelsen passere et hul p\u00e5 st\u00f8rrelse med en 2-krone (Milj\u00f8styrelsen).<\/li>\n<\/ul>\n<h2>Hvor lang er en rotte, og hvor meget er hale?<\/h2>\n<p>En voksen brun rotte er omkring 45 cm lang fra snude til halespids, og de 20 cm af det er hale, oplyser Bolius. Kroppen alene m\u00e5ler dermed cirka 25 cm &#8211; omtrent en underarms l\u00e6ngde. Det er den samlede l\u00e6ngde inklusive hale, folk husker, n\u00e5r de beskriver rotten som stor.<\/p>\n<p>Halen er samtidig et af de sikreste kendetegn. Milj\u00f8styrelsen beskriver, at den brune rottes hale er kortere end hoved og krop tilsammen, mens husrottens hale er l\u00e6ngere. Det er den samme logik, du kan bruge til at afg\u00f8re <a href=\"https:\/\/www.rattech.com\/forskel-paa-rotter-og-mus\/\">forskellen p\u00e5 rotter og mus<\/a>, hvor musens hale er markant l\u00e6ngere i forhold til kroppen.<\/p>\n<h2>Hvor meget vejer en rotte?<\/h2>\n<p>Den brune rotte vejer 200-400 gram if\u00f8lge Milj\u00f8styrelsen, og en voksen han ligger typisk p\u00e5 250-300 gram, oplyser Bolius. Hunner er i gennemsnit lidt mindre. V\u00e6gten svinger med alder og f\u00f8deadgang, s\u00e5 rotter omkring foderpladser, kompost og affalds\u00f8er bliver de tungeste.<\/p>\n<p>Til sammenligning vejer en husmus 12-24 gram, oplyser Milj\u00f8styrelsen. En almindelig rotte vejer alts\u00e5 cirka 10-20 gange s\u00e5 meget som en mus. Det er en af grundene til, at den samme f\u00e6lde ikke l\u00f8ser begge dele, og at fangstmekanikken skal dimensioneres til et dyr p\u00e5 flere hundrede gram.<\/p>\n<h2>Rotte, husrotte og mus: hvad er forskellen i m\u00e5l?<\/h2>\n<p>Den brune rotte vejer 200-400 gram, husrotten 100-200 gram og husmusen 12-24 gram if\u00f8lge Milj\u00f8styrelsen. \u00d8rerne og efterladenskaberne skiller dem hurtigst ad: rotteekskrementer er cirka 17 mm lange og 6 mm tykke, mens museekskrementer m\u00e5ler 3-5 mm. Tabellen nedenfor samler m\u00e5lene \u00e9t sted.<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Dyr<\/th>\n<th scope=\"col\">Samlet l\u00e6ngde<\/th>\n<th scope=\"col\">V\u00e6gt<\/th>\n<th scope=\"col\">Hale<\/th>\n<th scope=\"col\">\u00d8rer<\/th>\n<th scope=\"col\">Efterladenskaber<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th scope=\"row\">Brun rotte<\/th>\n<td>Ca. 45 cm, heraf ca. 20 cm hale<\/td>\n<td>200-400 g (han typisk 250-300 g)<\/td>\n<td>Kortere end hoved og krop tilsammen<\/td>\n<td>Korte, brede, d\u00e6kket af fine h\u00e5r<\/td>\n<td>Ca. 17 mm lange, 6 mm tykke<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Husrotte (sort rotte)<\/th>\n<td>Ikke oplyst i Milj\u00f8styrelsens oversigt; dyret vejer under det halve af en brun rotte<\/td>\n<td>100-200 g<\/td>\n<td>L\u00e6ngere end hoved og krop tilsammen<\/td>\n<td>Store, gennemsigtige, h\u00e5rl\u00f8se<\/td>\n<td>Ca. 17 mm lange, 6 mm tykke<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Husmus<\/th>\n<td>Ca. 14-20 cm (krop 7-10 cm + hale 6,5-10 cm)<\/td>\n<td>12-24 g<\/td>\n<td>Omtrent samme l\u00e6ngde som kroppen<\/td>\n<td>Store i forhold til hovedet<\/td>\n<td>Ca. 3-5 mm lange<\/td>\n<\/tr>\n<\/tbody>\n<\/table><figcaption class=\"wp-element-caption\">M\u00e5l og v\u00e6gt p\u00e5 brun rotte, husrotte og husmus. Tal fra Milj\u00f8styrelsen og Bolius. Samlet l\u00e6ngde for husmus er beregnet ud fra Milj\u00f8styrelsens krops- og halem\u00e5l.<\/figcaption><\/figure>\n<p>Er du i tvivl om, hvad du kigger p\u00e5, er efterladenskaberne mere p\u00e5lidelige end et glimt af dyret. Se hvordan du afl\u00e6ser <a href=\"https:\/\/www.rattech.com\/rotte-spor\/\">rottespor som gnav, ekskrementer og l\u00f8bespor<\/a>, f\u00f8r du konkluderer p\u00e5 arten.<\/p>\n<h2>Findes der k\u00e6mpe rotter i Danmark?<\/h2>\n<p>Der findes ingen s\u00e6rskilt k\u00e6mperotte-art i Danmark, men enkelte brune rotter bliver us\u00e6dvanligt store. Bolius oplyser, at der er dokumenteret danske rotter p\u00e5 mere end et halvt kilo &#8211; alts\u00e5 over 500 gram mod de typiske 250-300 gram for en han. De store eksemplarer er almindelige brune rotter, der er blevet gamle et sted med rigelig f\u00f8de.<\/p>\n<p>De helt store dyr optr\u00e6der derfor, hvor f\u00f8den er konstant: \u00e5bne affaldscontainere, fuglefodring, h\u00f8nseg\u00e5rde og kompost. Vil du fjerne grundlaget, er <a href=\"https:\/\/www.rattech.com\/fuglefodring-uden-rotter\/\">fuglefodring uden at tiltr\u00e6kke rotter<\/a> et af de mest effektive steder at starte.<\/p>\n<h3>Hvorfor ser store rotter st\u00f8rre ud, end de er?<\/h3>\n<p>Fordi rotten n\u00e6sten altid m\u00e5les med \u00f8jet &#8211; i halvm\u00f8rke, p\u00e5 f\u00e5 sekunder og p\u00e5 afstand. Observationen inkluderer de cirka 20 cm hale, Bolius angiver, og v\u00e5dt pels f\u00e5r silhuetten til at virke kraftigere. Derfor bliver en helt almindelig rotte p\u00e5 300 gram let til en beretning om en k\u00e6mpe rotte.<\/p>\n<p>I haven er der desuden en reel forvekslingsmulighed. Bolius oplyser, at mosegrisens huller m\u00e5ler cirka 5-7 cm, mens rottens jordhuller typisk har st\u00f8rrelse som en tennisbold. Er du i tvivl, s\u00e5 sammenlign kendetegnene for <a href=\"https:\/\/www.rattech.com\/mosegris-eller-rotte\/\">mosegris eller rotte<\/a>, inden du s\u00e6tter ind mod det forkerte dyr.<\/p>\n<h2>G\u00f8r rottegift rotterne st\u00f8rre?<\/h2>\n<p>Nej, rottegift g\u00f8r ikke rotter st\u00f8rre. Myten om superrotter handler ikke om st\u00f8rrelse, men om resistens: rotter, der genetisk t\u00e5ler antikoagulant gift. Milj\u00f8styrelsens Milj\u00f8projekt nr. 1312 fra 2009, udarbejdet af Skadedyrlaboratoriet p\u00e5 Aarhus Universitet p\u00e5 baggrund af monitering i 2001-2008, fandt resistens over for coumatetralyl, bromadiolon eller difenacoum p\u00e5 lokaliteter i omkring halvdelen af de unders\u00f8gte kommuner. En resistent rotte vejer det samme som en ikke-resistent.<\/p>\n<p>Gift har til geng\u00e6ld en pris, der r\u00e6kker langt ud over rotten selv. I faglig rapport nr. 788 fra Danmarks Milj\u00f8unders\u00f8gelser, Aarhus Universitet (Christensen, Elmeros &amp; Lassen, 2010) var forekomsten af antikoagulanter 84-100 procent for alle unders\u00f8gte arter af rovfugle, ugler og sm\u00e5 rovpattedyr. For r\u00f8d glente og stor hornugle l\u00e5 henholdsvis 66 og 70 procent af individerne over den kritiske gr\u00e6nse p\u00e5 200 ng\/g, og over 60 procent af fuglene havde to eller flere forskellige antikoagulanter i kroppen samtidig.<\/p>\n<p>Det er hele baggrunden for at bek\u00e6mpe rotter uden gift. En <a href=\"https:\/\/www.rattech.com\/product\/grundpakke\/\">digital rottef\u00e6lde<\/a> afliver rotten mekanisk og sender besked, n\u00e5r den har fanget. Der er ingen aktiv gift i milj\u00f8et, ingen sekund\u00e6r forgiftning af rovfugle eller k\u00e6ledyr, og ingen d\u00f8d rotte gemt inde i en konstruktion.<\/p>\n<h2>Hvor sm\u00e5 huller kan en stor rotte komme igennem?<\/h2>\n<p>En rotte p\u00e5 300 gram kan passere et hul p\u00e5 st\u00f8rrelse med en 2-krone, oplyser Milj\u00f8styrelsen, og Bolius s\u00e6tter den mindste passage til cirka 2 cm i diameter. Kraniet er det eneste, der ikke kan klemmes sammen, s\u00e5 hvis hovedet kan komme igennem, f\u00f8lger kroppen med. Derfor siger dyrets v\u00e6gt meget lidt om, hvor t\u00e6t din bygning reelt er.<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">\u00c5bning eller spor<\/th>\n<th scope=\"col\">Typisk st\u00f8rrelse<\/th>\n<th scope=\"col\">Kilde<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th scope=\"row\">Hul en rotte kan passere<\/th>\n<td>Som en 2-krone<\/td>\n<td>Milj\u00f8styrelsen<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Mindste passage for en rotte<\/th>\n<td>Ca. 2 cm i diameter<\/td>\n<td>Bolius<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Rottehul i jorden<\/th>\n<td>Ca. som en tennisbold<\/td>\n<td>Bolius<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Mosegrisens hul i jorden<\/th>\n<td>Ca. 5-7 cm, som en bordtennisbold<\/td>\n<td>Bolius<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Musehul i jorden<\/th>\n<td>H\u00f8jst et par centimeter i diameter<\/td>\n<td>Milj\u00f8styrelsen<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Gnavem\u00e6rker fra rotte<\/th>\n<td>Ca. 3 mm brede<\/td>\n<td>Milj\u00f8styrelsen<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">Gnavem\u00e6rker fra mus<\/th>\n<td>Under 2 mm brede<\/td>\n<td>Milj\u00f8styrelsen<\/td>\n<\/tr>\n<\/tbody>\n<\/table><figcaption class=\"wp-element-caption\">Typiske m\u00e5l p\u00e5 de \u00e5bninger og spor, rotter og mus efterlader. Tal fra Milj\u00f8styrelsen og Bolius.<\/figcaption><\/figure>\n<p>Bolius oplyser samtidig, at rotter oftest kommer ind gennem ut\u00e6theder eller fejl i afl\u00f8b, br\u00f8nde og kloak &#8211; ikke gennem hovedd\u00f8ren. Gennemg\u00e5 derfor b\u00e5de <a href=\"https:\/\/www.rattech.com\/hvordan-kommer-rotter-ind-i-huset\/\">de veje rotter kommer ind i huset ad<\/a> og overvej en <a href=\"https:\/\/www.rattech.com\/bedste-rottespaerre\/\">rottesp\u00e6rre i kloakstikledningen<\/a>, hvis ejendommen er \u00e6ldre.<\/p>\n<h2>Hvad betyder rottens st\u00f8rrelse for bek\u00e6mpelsen?<\/h2>\n<p>Et dyr p\u00e5 200-400 gram, som Milj\u00f8styrelsen angiver, stiller konkrete krav til udstyret. F\u00e6lden skal aflive et stort, kraftigt gnaverdyr sikkert hver gang, og den skal kunne rumme og genoplade efter flere fangster i tr\u00e6k. Underdimensioneret udstyr giver skadede dyr og fortsat aktivitet p\u00e5 ejendommen.<\/p>\n<p>Antallet af f\u00e6lder f\u00f8lger ejendommens st\u00f8rrelse og antallet af aktive l\u00f8beveje, ikke antallet af rotter du har set. En <a href=\"https:\/\/www.rattech.com\/product\/gennemgang-af-ejendom\/\">gennemgang af ejendommen<\/a> kortl\u00e6gger, hvor dyrene faktisk f\u00e6rdes, og et <a href=\"https:\/\/www.rattech.com\/product\/abonnement\/\">abonnement med overv\u00e5gning, t\u00f8mning og service<\/a> holder f\u00e6lderne skarpe over tid. Det er is\u00e6r relevant, n\u00e5r problemet st\u00e5r i k\u00e6lder eller kryberum &#8211; l\u00e6s mere om <a href=\"https:\/\/www.rattech.com\/rotter-i-kaelderen\/\">rotter i k\u00e6lderen<\/a>.<\/p>\n<p>Husk ogs\u00e5 tempoet. Bolius oplyser, at \u00e9t rottepar under gunstige forhold kan blive til omkring 50 rotter p\u00e5 et \u00e5r. St\u00f8rrelsen p\u00e5 den enkelte rotte betyder derfor mindre end, hvor hurtigt <a href=\"https:\/\/www.rattech.com\/rotters-formering\/\">rotters formering<\/a> l\u00f8ber fra dig.<\/p>\n<h2>Hvad g\u00f8r du, hvis du har set en stor rotte?<\/h2>\n<p>Du skal anmelde rotter til din kommune, oplyser Bolius, og anmeldelsen sker typisk digitalt via borger.dk eller kommunens selvbetjening. Det g\u00e6lder uanset dyrets st\u00f8rrelse, uanset om du kun har set spor, og ogs\u00e5 selvom du selv hyrer hj\u00e6lp. Kommunen har ansvaret for rottebek\u00e6mpelsen.<\/p>\n<p>R\u00f8r ikke ved d\u00f8de rotter med bare h\u00e6nder. Statens Serum Institut opgjorde 51 tilf\u00e6lde af leptospirose i Danmark i 2019-2022; blandt de 47 anmeldte tilf\u00e6lde var 14 indlagt, og ingen d\u00f8de. Smitten sker via urin fra gnavere, ofte gennem s\u00e5r eller slimhinder. Se den praktiske fremgangsm\u00e5de for <a href=\"https:\/\/www.rattech.com\/anmeld-rotter-til-kommunen\/\">at anmelde rotter til kommunen<\/a>, og hold omr\u00e5det ryddet imens.<\/p>\n<div class=\"rt-cta\">\n<h3>Slip af med rotterne \u2014 helt uden gift<\/h3>\n<p>RatTechs digitale f\u00e6lder afliver rotterne mekanisk og overv\u00e5ger d\u00f8gnet rundt. Vi st\u00e5r for montering, service og t\u00f8mning, s\u00e5 du aldrig skal h\u00e5ndtere hverken gift eller kadaver.<\/p>\n<p>  <a class=\"rt-cta-btn\" href=\"\/product\/grundpakke\/\">Se grundpakken<\/a>\n<\/div>\n<h2>Ofte stillede sp\u00f8rgsm\u00e5l<\/h2>\n<div class=\"rt-faq\">\n<details>\n<summary>Hvor stor er en rotteunge?<\/summary>\n<div class=\"rt-faq-a\">En rotteunge, der lige har forladt reden, kan v\u00e6re p\u00e5 st\u00f8rrelse med en mus, s\u00e5 kropsl\u00e6ngden alene afg\u00f8r ingenting. G\u00e5 efter \u00f8rer og efterladenskaber: Milj\u00f8styrelsen angiver rotteekskrementer til cirka 17 mm lange og 6 mm tykke mod musens 3-5 mm, og gnavem\u00e6rker fra rotter til cirka 3 mm brede mod musens under 2 mm.<\/div>\n<\/details>\n<details>\n<summary>Kan en rotte blive lige s\u00e5 stor som en kat?<\/summary>\n<div class=\"rt-faq-a\">Nej. En almindelig brun rotte vejer 200-400 gram if\u00f8lge Milj\u00f8styrelsen, og de st\u00f8rste dokumenterede danske eksemplarer ligger lidt over et halvt kilo, oplyser Bolius. Det er langt fra en kats v\u00e6gt. Beretninger om katstore rotter skyldes typisk halvm\u00f8rke, kort observationstid og at halen p\u00e5 cirka 20 cm t\u00e6lles med.<\/div>\n<\/details>\n<details>\n<summary>Er en stor rotte farligere end en lille?<\/summary>\n<div class=\"rt-faq-a\">St\u00f8rrelsen \u00e6ndrer ikke smitterisikoen. Statens Serum Institut opgjorde 51 tilf\u00e6lde af leptospirose i Danmark i 2019-2022; blandt de 47 anmeldte tilf\u00e6lde var 14 indlagt, og ingen d\u00f8de. Smitten sker via urin fra gnavere. En stor rotte kan gnave i kraftigere materialer, men forholdsreglerne er de samme: undg\u00e5 direkte kontakt, og brug handsker.<\/div>\n<\/details>\n<details>\n<summary>Hvordan ved jeg, om det er en rotte eller en mosegris i haven?<\/summary>\n<div class=\"rt-faq-a\">Se p\u00e5 hullet frem for dyret. Bolius oplyser, at mosegrisens huller m\u00e5ler cirka 5-7 cm, alts\u00e5 p\u00e5 st\u00f8rrelse med en bordtennisbold, mens rottens jordhuller typisk svarer til en tennisbold. Mosegrisen laver desuden sm\u00e5 jordskud med \u00e5bne huller og gnaver i r\u00f8dder, mens rotter efterlader fedtede l\u00f8bespor langs mure og faste ruter.<\/div>\n<\/details>\n<details>\n<summary>Bliver rotter st\u00f8rre, hvis de har overlevet rottegift?<\/summary>\n<div class=\"rt-faq-a\">Nej. Resistens er genetisk tolerance over for antikoagulant gift, ikke \u00f8get kropsst\u00f8rrelse. Milj\u00f8styrelsens Milj\u00f8projekt nr. 1312 fra 2009, udarbejdet af Skadedyrlaboratoriet p\u00e5 Aarhus Universitet, fandt resistens over for coumatetralyl, bromadiolon eller difenacoum p\u00e5 lokaliteter i omkring halvdelen af de unders\u00f8gte kommuner. En resistent rotte vejer det samme som en ikke-resistent.<\/div>\n<\/details>\n<\/div>\n<h2>Kilder<\/h2>\n<ul>\n<li><a href=\"https:\/\/mst.dk\/erhverv\/rent-miljoe-og-sikker-forsyning\/rottebekaempelse\/kend-forskel-paa-mus-og-rotter\">Milj\u00f8styrelsen: Kend forskel p\u00e5 mus og rotter<\/a> &#8211; v\u00e6gt, hale, \u00f8rer, ekskrementer, gnavem\u00e6rker og hulst\u00f8rrelser.<\/li>\n<li><a href=\"https:\/\/www.bolius.dk\/rotter-i-boligen-18058\">Bolius &#8211; Boligejernes Videncenter: Rotter i boligen<\/a> &#8211; l\u00e6ngde, v\u00e6gt, formering, indtr\u00e6ngningsveje og anmeldelse til kommunen.<\/li>\n<li><a href=\"https:\/\/www.bolius.dk\/hvilket-dyr-graver-huller-i-min-have-23728\">Bolius: Hvilket dyr graver huller i min have?<\/a> &#8211; rottehuller, mosegrisehuller og kendetegn i haven.<\/li>\n<li><a href=\"https:\/\/www2.mst.dk\/udgiv\/publikationer\/2010\/978-87-92617-29-3\/html\/default.htm\">Milj\u00f8styrelsen, Milj\u00f8projekt nr. 1312 (2009): Resistens hos brune rotter &#8211; monitering 2001-2008<\/a>, udarbejdet af Skadedyrlaboratoriet, Aarhus Universitet.<\/li>\n<li><a href=\"https:\/\/www.dmu.dk\/Pub\/FR788.pdf\">Christensen, T.K., Elmeros, M. &amp; Lassen, P. (2010): Forekomst af antikoagulante rodenticider i danske rovfugle, ugler og sm\u00e5 rovpattedyr<\/a>, faglig rapport nr. 788, Danmarks Milj\u00f8unders\u00f8gelser, Aarhus Universitet.<\/li>\n<li><a href=\"https:\/\/www.ssi.dk\/sygdomme-beredskab-og-forskning\/sygdomsovervaagning\/l\/leptospirose-i-danmark-2019-2022\">Statens Serum Institut: Leptospirose &#8211; opg\u00f8relse over sygdomsforekomst 2019-2022<\/a>.<\/li>\n<li><a href=\"https:\/\/www.borger.dk\">Borger.dk<\/a> &#8211; anmeldelse af rotter til kommunen.<\/li>\n<\/ul>\n<p><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"BlogPosting\",\"headline\":\"Hvor stor er en rotte? L\u00e6ngde, v\u00e6gt og de store myter\",\"description\":\"En brun rotte bliver ca. 45 cm inkl. hale og vejer 200-400 gram. Se tabellen med m\u00e5l og v\u00e6gt, og hvordan du kender en stor rotte fra en mosegris.\",\"inLanguage\":\"da-DK\",\"datePublished\":\"2026-09-18\",\"dateModified\":\"2026-09-18\",\"mainEntityOfPage\":{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.rattech.com\/hvor-stor-er-en-rotte\/\"},\"author\":{\"@type\":\"Organization\",\"name\":\"RatTech\",\"url\":\"https:\/\/www.rattech.com\/\"},\"publisher\":{\"@type\":\"Organization\",\"name\":\"RatTech\",\"url\":\"https:\/\/www.rattech.com\/\"},\"about\":[{\"@type\":\"Thing\",\"name\":\"Brun rotte\"},{\"@type\":\"Thing\",\"name\":\"Giftfri rottebek\u00e6mpelse\"}],\"citation\":[{\"@type\":\"CreativeWork\",\"name\":\"Milj\u00f8styrelsen - Kend forskel p\u00e5 mus og rotter\",\"url\":\"https:\/\/mst.dk\/erhverv\/rent-miljoe-og-sikker-forsyning\/rottebekaempelse\/kend-forskel-paa-mus-og-rotter\"},{\"@type\":\"CreativeWork\",\"name\":\"Bolius - Rotter i boligen\",\"url\":\"https:\/\/www.bolius.dk\/rotter-i-boligen-18058\"},{\"@type\":\"CreativeWork\",\"name\":\"Milj\u00f8styrelsen - Milj\u00f8projekt nr. 1312 (2009): Resistens hos brune rotter\",\"url\":\"https:\/\/www2.mst.dk\/udgiv\/publikationer\/2010\/978-87-92617-29-3\/html\/default.htm\"},{\"@type\":\"CreativeWork\",\"name\":\"Christensen, Elmeros & Lassen (2010) - Forekomst af antikoagulante rodenticider i danske rovfugle, ugler og sm\u00e5 rovpattedyr\",\"url\":\"https:\/\/www.dmu.dk\/Pub\/FR788.pdf\"},{\"@type\":\"CreativeWork\",\"name\":\"Statens Serum Institut - Leptospirose 2019-2022\",\"url\":\"https:\/\/www.ssi.dk\/sygdomme-beredskab-og-forskning\/sygdomsovervaagning\/l\/leptospirose-i-danmark-2019-2022\"}]},{\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Forside\",\"item\":\"https:\/\/www.rattech.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Blog\",\"item\":\"https:\/\/www.rattech.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Hvor stor er en rotte?\",\"item\":\"https:\/\/www.rattech.com\/hvor-stor-er-en-rotte\/\"}]}]}<\/script><br \/>\n<script type=\"application\/ld+json\">{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Hvor stor er en rotteunge?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"En rotteunge, der lige har forladt reden, kan v\u00e6re p\u00e5 st\u00f8rrelse med en mus, s\u00e5 kropsl\u00e6ngden alene afg\u00f8r ingenting. G\u00e5 efter \u00f8rer og efterladenskaber: Milj\u00f8styrelsen angiver rotteekskrementer til cirka 17 mm lange og 6 mm tykke mod musens 3-5 mm, og gnavem\u00e6rker fra rotter til cirka 3 mm brede mod musens under 2 mm.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Kan en rotte blive lige s\u00e5 stor som en kat?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Nej. En almindelig brun rotte vejer 200-400 gram if\u00f8lge Milj\u00f8styrelsen, og de st\u00f8rste dokumenterede danske eksemplarer ligger lidt over et halvt kilo, oplyser Bolius. Det er langt fra en kats v\u00e6gt. Beretninger om katstore rotter skyldes typisk halvm\u00f8rke, kort observationstid og at halen p\u00e5 cirka 20 cm t\u00e6lles med.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Er en stor rotte farligere end en lille?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"St\u00f8rrelsen \u00e6ndrer ikke smitterisikoen. Statens Serum Institut opgjorde 51 tilf\u00e6lde af leptospirose i Danmark i 2019-2022; blandt de 47 anmeldte tilf\u00e6lde var 14 indlagt, og ingen d\u00f8de. Smitten sker via urin fra gnavere. En stor rotte kan gnave i kraftigere materialer, men forholdsreglerne er de samme: undg\u00e5 direkte kontakt, og brug handsker.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Hvordan ved jeg, om det er en rotte eller en mosegris i haven?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Se p\u00e5 hullet frem for dyret. Bolius oplyser, at mosegrisens huller m\u00e5ler cirka 5-7 cm, alts\u00e5 p\u00e5 st\u00f8rrelse med en bordtennisbold, mens rottens jordhuller typisk svarer til en tennisbold. Mosegrisen laver desuden sm\u00e5 jordskud med \u00e5bne huller og gnaver i r\u00f8dder, mens rotter efterlader fedtede l\u00f8bespor langs mure og faste ruter.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Bliver rotter st\u00f8rre, hvis de har overlevet rottegift?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Nej. Resistens er genetisk tolerance over for antikoagulant gift, ikke \u00f8get kropsst\u00f8rrelse. Milj\u00f8styrelsens Milj\u00f8projekt nr. 1312 fra 2009, udarbejdet af Skadedyrlaboratoriet p\u00e5 Aarhus Universitet, fandt resistens over for coumatetralyl, bromadiolon eller difenacoum p\u00e5 lokaliteter i omkring halvdelen af de unders\u00f8gte kommuner. En resistent rotte vejer det samme som en ikke-resistent.\"\n      }\n    }\n  ]\n}<\/script>\n<\/div>\n<aside class=\"rt-contact\">\n  <span class=\"rt-contact-badge\">Giftfri rottebek\u00e6mpelse<\/span><\/p>\n<h3>Har du rotter?<\/h3>\n<p>F\u00e5 en uforpligtende snak om digital, giftfri bek\u00e6mpelse \u2014 vi d\u00e6kker Sj\u00e6lland og Stork\u00f8benhavn.<\/p>\n<p class=\"rt-contact-phone\"><a href=\"tel:+4570200091\">70 20 00 91<\/a><\/p>\n<p class=\"rt-contact-mail\"><a href=\"mailto:info@rattech.com\">info@rattech.com<\/a><\/p>\n<p>  <a class=\"rt-contact-btn\" href=\"\/product\/gennemgang-af-ejendom\/\"><svg width=\"17\" height=\"17\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"><rect x=\"3\" y=\"4\" width=\"18\" height=\"18\" rx=\"2\"\/><path d=\"M16 2v4M8 2v4M3 10h18M9 16l2 2 4-4\"\/><\/svg>Book en ejendomsgennemgang<\/a><br \/>\n<\/aside>\n<\/div>\n<p><script id=\"rt-table-labels\">\n(function(){function go(){document.querySelectorAll('.rt-main table').forEach(function(t){\nvar hs=[].map.call(t.querySelectorAll('thead th'),function(th){return th.textContent.trim();});\nt.querySelectorAll('tbody tr').forEach(function(tr){[].forEach.call(tr.children,function(td,i){if(hs[i])td.setAttribute('data-label',hs[i]);});});});}\nif(document.readyState!=='loading')go();else document.addEventListener('DOMContentLoaded',go);})();\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>En brun rotte bliver ca. 45 cm inkl. hale og vejer 200-400 gram. Se tabellen med m\u00e5l og v\u00e6gt, og hvordan du kender en stor rotte fra en mosegris.<\/p>","protected":false},"author":7,"featured_media":693,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3548","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>RatTech<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.rattech.com\/es\/hvor-stor-er-en-rotte\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.rattech.com\/es\/hvor-stor-er-en-rotte\/\" \/>\n<meta property=\"og:site_name\" content=\"RatTech\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-18T18:39:20+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-18T18:39:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.rattech.com\/wp-content\/uploads\/2024\/10\/iStock-522675447.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"776\" \/>\n\t<meta property=\"og:image:height\" content=\"504\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"space\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"space\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"10 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.rattech.com\\\/hvor-stor-er-en-rotte\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.rattech.com\\\/hvor-stor-er-en-rotte\\\/\"},\"author\":{\"name\":\"space\",\"@id\":\"https:\\\/\\\/www.rattech.com\\\/en\\\/#\\\/schema\\\/person\\\/bc212bbb4bd24f92a7afa66f5c1f4661\"},\"headline\":\"Hvor stor er en rotte? 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