Roof Rats come in Agouti and Black colors.
Norway Rats have Rex and Smooth coated rats. There are also hairless Norway Rats.
The markings range from capped barebacked, hooded, and berkshire. Some of rats also have variegated and/or blazed markings with attractive white spotting or even full split capped. These markings are not associated with High White genetics in well bred lines.
Norway Rat colors include albino, black, agouti, mink, pearl, amber and blue.