Brown rat, Rattus norvegicus "Brown Rat (Rattus norvegicus)" by Anemoneprojectors via Flickr, Creative Commons Attribution ShareAlike. | Fancy rat, Rattus norvegicus forma domestica "Rat No. 2" by Ojbyrne via Flickr, Creative Commons Attribution. |
Black rat, Rattus rattus "Rattus rattus" by Piglicker via Flickr, Creative Commons Attribution-NoDerivs. |
Fancy rat, Rattus norvegicus forma domesticaRattus novaeguineae (Add)