Pack rat - Wikipedia
Brown rat Description, Origin, Pest, Diseases, Laboratory Animal
Rats are various medium-sized, long-tailed rodents. Species of
Thaxted Essex England. Brown Rat in photographers garden. April
Musky rat-kangaroo - Wikipedia
File:Brown Rats Distribution.png - Wikipedia
Atlantic spiny rat - Wikipedia
Black rat - Wikipedia
Brown Rat, Animals Wiki
Study: Whisker movements in rats shape brain development
Delacour's marmoset rat - Wikipedia
Manipur bush rat - Wikipedia
File:Brown Rat (19143365308).jpg - Wikipedia
Are there rats in Alberta? Wikipedia can't decide.