Eurasian beaver
Eurasian beavers are one of the largest living species of rodents and are the largest rodent native to Eurasia. They weigh around . In Norway, adult males average while females average , while another study found adults from the same country to average . By the average weights known, the Eurasian beaver appears to be the world's second heaviest rodent behind the capybara, but averaging slightly larger and heavier than the North American beaver. While the largest specimen confirmed on record weighed , the Smithsonian has reported that this species can exceptionally exceed . Typically, the head-and-body length is and the tail length is .
Hypogeomys
Hypogeomys is a genus of rodents in the family Nesomyidae, found in Madagascar. There is one extant species, the Malagasy giant rat ("Hypogeomys antimena"), currently an endangered species with a restricted range. There is also another species known from subfossils from a few thousand years ago, "Hypogeomys australis". "H. antinema" measures , making it the largest rodent in Madagascar, while "H. australis" seems to have been slightly larger.