Biggest Rabbit was "Roly-Poly." Giant Rabbit Fossil Found: Biggest Bunny Was "Roly-Poly" Biggest Rabbit was "Roly-Poly." really wild hare National Geographic News: Giant Rabbit Fossil Found: Biggest Bunny was "Roly-Poly" Giant Rabbit Fossil Found: Biggest Bunny was "Roly-Poly" "Giant Rabbit Fossil Found: Biggest Bunny Was "Roly-Poly"" http://news.national...us-rex-largest/ prehistoric rabbit of unusual size Biggest Rabbit was "Roly-Poly." Nuralagus rex Biggest Rabbit was "Roly-Poly." http://news.national...us-rex-largest/ http://news.national...us-rex-largest/