Heaviest frog ever

The heaviest species of frog ever known to have existed was Beelzebubo ampinga, which lived in Madagascar during the late Cretaceous Period (100-65 million years ago). Formally described by science in 2008 and currently known from some 75 bones and other fossil fragments, females of this mega-species may have grown to over 40 cm (15.7 in) long, and weighed 4 kg (8.8 lb). Its mouth was so expansive that it was probably capable of preying upon small juvenile dinosaurs that co-existed there at that time. Curiously, the closest relatives of this fearsome frog were the horned toads (which are actually frogs), native to the Americas, thousands of miles away.