This particularly unattractive species is considered to be the most endangered amphibian in North America. It is restricted to the Laramie Basin in Albany County, Wyoming, USA, although its historical range was thought to be around 2,330 km². This species was once abundant in this basin, but the population saw a drastic decline and by the 1980s it had been listed as federally endangered. By 1994 the species had been listed as extinct in the wild and so scientists rounded up the few remaining individuals and kept them as an ex situ population. This captive population is maintained for breeding efforts, with the tadpoles and toadlets produced being reintroduced into the wild via a reintroduction program. However, it is still listed as extinct in the wild as the wild population is not self-sustaining. It is highly threatened with the main threats to this species being pollution (e.g. pesticides), habitat destruction and disease (especially the well-known chytrid fungus). Unfortunately, it is thought that the Wyoming toad population at present has been inflicted with the amphibian chytrid fungus, and so at present the future for this fascinating species looks bleak.
Fun fact: Toads secretes poison from glands on their neck; therefore, if an animal tries to prey upon the toad then they will succumb to a reaction to the poison which may result in either an upset stomach or death. This toad adaptation is used to deter predators.
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