This is a black rat, also called a roof rat, brought in by one of my cats. I don’t usually mention them because usually I find half a rat–the front half. It weighed 182 grams (6 ounces). Yes, I weighed it –why do you ask?
Black rats look a lot like giant mice. Norway rats or brown rats, which came from Europe on wooden ships, are much larger with a shorter tail and shaggier fur.