The biggest kind of frog is the Goliath frog (Conraua goliath). Their bodies can reach the size of nearly a foot (30 cm) long. The Conraua Goliath weighs as much as a large housecat, about 3.3 kilos! It has a ten foot leap.
Despite their enormous size as adults, eggs and tadpoles of goliath frogs are about the same size as those of other frogs. Like many other species that are the largest members of an evolutionary group, goliath frogs have a very small range. They're found only in a few swift-moving rivers that wind through a fringe of dense rain forest in coastal sections of Cameroon and Equatorial Guinea in western Africa.
They are prized as food by the Bayele, a tribe of pygmies, who also value their thigh bones for their presumed power to bring good luck. Formerly much sought after by zoological parks, the goliath frog is now protected by law
Goliath frogs don't breed or survive well in captivity. The only real hope for their survival is the preservation of wild populations.