Paedophryne amauensis is the smallest species of frog. It has around 7.7 mm (9.03 ft) in length. It lives in the Papua New Guinea and it is also the world’s smallest known vertebrate. The largest frog is the goliath frog (Conraua goliath), which lives in Cameroon and Equatorial Guinea. It has around 30 cm (1 ft) in length and about 3 kg (6.61 lb) in weight.
Around 340 species of frog lives on the world. Some of them can fly or dig.