Field research has uncovered the world’s smallest frogs in southeastern New Guinea. The discovery also makes them the world’s smallest tetrapods (non-fish vertebrates). The frogs belong to the genus Paedophryne, all of whose species are extremely small, with adults of the two new species — named Paedophryne dekot and Paedophryne verrucosa — only 8 to 9 millimeters in length.