The federal government will designate more than 10,000 acres in Arizona and New Mexico as prime habitat for the threatened Chiricahua leopard frog. More than a dozen streams and many livestock ...

A batch of 1,000 rare tadpoles raised at the Phoenix Zoo landed in a new home at the Grasshopper Tank in the Tonto National Forest, part of ongoing efforts to boost the population of the threatened ...

• Status: Listed as threatened since 2002. • Reasons for decline: Disease, habitat loss, competition from non-native species and drought. • Description: Spotted, greenish with a raised fold of skin ...

Aug. 17—Washington wildlife managers released hundreds of endangered northern leopard frogs into Washington's channeled scablands Tuesday evening. About a dozen of those frogs were outfitted with ...

One of Alberta's most at-risk amphibians is making a comeback. Provincial efforts to help northern leopard frog numbers bounce back have been successful in establishing new self-sustaining populations ...

The Phoenix Zoo recently released 1,000 tadpoles into the Tonto National Forest, part of a program to save the threatened Chiricahua leopard frog. The zoo collects eggs every year, and those eggs ...