Take a rare glimpse into the breeding behavior of the great plains toad (Anaxyrus cognatus), a Wyoming species of greatest conservation need. These toads are more often heard and not seen, due to their incredibly loud calls for such a small animal! This video shows how male toads produce their calls—by inflating a sac on their throat (called the vocal pouch) with air. Each summer, just after sunset, males congregate in temporary ponds on the high prairie and begin their impressive chorus. Wildli

Characters and Voice Actors - X Men: Evolution