The world's smallest frog reaches the size of no more than 7-8 mm. The representative of the type of Paedophryne amauensis set a record - it reaches a length - only 7, 7 millimeters. On the discovery of a new type of record size, scientists reported in January 2012, although the frog was discovered by researchers in the tropical forests in the south of Papua New Guinea, a couple of years ago.