The goliath frog (Conraua goliath), otherwise known commonly as the giant slippery frog and the goliath bullfrog, is a species of frog in the family Conrauidae. The goliath frog is the largest living frog. Specimens can grow up to in length from snout to vent, and weigh up to . This species has a relatively small habitat range in Cameroon and Equatorial Guinea. Its numbers are dwindling due to habitat destruction and its collection for food and the pet trade. Description Sexual dimorphism between the sexes is minimal. In a sample of 15 individuals, weights ranged between , and snout-vent lengths were between . Their eyes can be nearly in diameter. The conspicuous tympanum has a diameter around and is separated from the eye by about in adults. Goliath frog eggs and tadpoles are about the same size as other frogs despite their very large adult form. A lateral fold extends from the eye to the posterior portion of the tympanum. Toes are fully webbed, with large interdigital membranes extending down to the toe tips. The second toe is the longest. The skin on the dorsum and on top of the limbs is granular. Dorsal coloration is green sienna, while the abdomen and ventral part of the limbs are yellow/orange. They have acute hearing, but no vocal sac, and also lack nuptial pads. Habitat and distribution The Goliath frog is mainly found near waterfalls in Equatorial Guinea and Cameroon. Their habitat is divided into two main seasons: the dry season which occurs from November to April and the rainy season which occurs from May to October. The Goliath frog is one of the largest frogs and since it has such a large size, it has an extremely selective distribution. This species is primarily located in a dense equatorial forest fringe which is somewhat parallel to the coast and surrounded by rivers. The Goliath frog was located in Sanaga Basin mainly appearing near the Nachtigal cascades and in the Sakbayeme rapids, in Kienke Basin, Ntem Basin mainly being located near the rapids of the Mensolo and Nsana, in Mbía Basin where it was found to be very abundant in the rapids and cascades. These distribution patterns emphasize its limited environment which tends to have a clear preference for water territories. Conservation The primary threat to the goliath frog is hunting, as it is considered a food source in its native range.