Nectophrynoides
Nectophrynoides is a genus of true toads. They live in Eastern Arc forests and wetlands in Tanzania. All but N. tornieri are threatened. Species of the genus are ovoviviparous: fertilization is internal, and the females give birth to fully developed, small toadlets. Together with the West Africa Nimbaphrynoides, they are the only frogs/toads in the world that do not lay eggs.