1) Extinct mammal 
Canariomys is an extinct genus of rodents (Old World rats and mice) that once existed on the islands of Tenerife and Gran Canaria, part of the Canary Islands, Spain. These giant rats could reach a weight of about 1 kg. The species was a herbivore; its diet was based on plant materials, probably soft vegetables as some roots, ferns, berries, but no...