Quote of the moment:
These are like the X-Files, but with fewer UFOs, and more discussion of the government suppression of the Electric Pornograph.
So, I made a handy chart for my pal Jesse Lindsay, comparing the appearance and habits of the European Black Rat (rattus rattus) and the Norwegian Brown Rat (rattus norvegicus) - so that he could determine how best to deal with the one living under his sink.
Perhaps it could help you, if you have a rat identification issue.