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) Red Rat GalleryEdit A Norway Rat. 1 of 3Add photo Retrieved from "https://beastwarstransformers.fandom.com/wiki/Rat?oldid=46569" Categories: Animals Mammals Beast Wars Maximals Beast Machines Maximals Rat Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.