African bullfrog, Pyxicephalus adspersus

One of the largest frogs in the world (25 cm, 1.4 kg). It lives in the African savannas, where it spends the dry seasons underground in a skin cocoon. During the rainy season, it spawns on the flooded areas. If they dry out, the males dig canals to other remaining puddles of water. Males are a lot bigger than females, which is rather unusual for frogs. And also - just like male hippos - also male bullfrogs appear to be extremely territorial...