This family is nearly cosmopolitan in distribution. In North America the family is represented by a single genus Bufo. Characteristics of the True Toads are the absence of teeth in the upper jaw, a peculiar structure (Bidder's organ) near the testes of males, and heavily ossified skulls (Pough 1998). The two species present in Idaho have the stereotypical "toad" body form (a relatively squat body with short legs and rough bumpy skin due to poison glands).