wyoming toad

To prevent extinction, a captive-breeding program began in 1989 at the Thorne Williams Unit that produced enough offspring in its first few years to supply seven zoos, and in 1998 the Saratoga National Fish Hatchery received captive-breeding stock.

History of wyoming toad

The toad’s extreme rarity, documented between 1976 and 1978, revealed no remaining wild populations.