The Houston toad (Anaxyrus houstonensis, formerly Bufo houstonensis) is an endangered species of amphibian that is endemic to Texas in the United States. This toad was discovered in the late 1940s and named in 1953. It was the first amphibian added to the United States Endangered Species Act and was labeled under endangered. The Houston toad was placed as Endangered on the IUCN Red List of Threatened Species since 1986. Official estimates are that just 3,000–4,000 adult Houston Toads are left in the world. Their kind is threaten every day as they continue to suffer from a loss of habitat and extreme drought as well as massive wildfires. Their typical life expectancy is at least 3 years but it may exceed this number.