Members of the Nectophrynoides genus (more commonly known as tree toads) don’t bother with the egg and tadpole stages. One of the newly described toad species, Nectophrynoides uhehe. Credit: Michele MenegonThe prevailing theory is that tree toads evolved their unique birthing strategy due to their habitats. The study’s authors noted that most known tree toads are already on the verge of eradication. One species, Nectophrynoides asperginis, is already extinct in the wild, while Nectophrynoides poyntoni hasn’t been seen since 2003.