A Brown Rat. A Rat is a mammal. It is the only mammal that can gnaw, spy, and eat junk food. Other mammal can only climb and crawl. Transformers With That Beast ModeEdit Rattrap Packrat Twin Twist (BW) GalleryEdit A Norway Rat. 1 of 3Add photo Retrieved from "https://beastwarstransformers.fandom.com/wiki/Rat?oldid=43571" Categories: Animals Mammals Beast Wars Maximals Beast Machines Maximals Rat Community content is available under CC-BY-SA unless otherwise noted.