EAGAR — In a way, Thomas Biebighauser is playing God. He stood at a gravely precipice studying his holey handiwork — a 13-foot-deep crater in the grassy plains of Arizona’s White Mountains. Soon, it ...

I camped at Teal Lake in the Park Range to photograph fall colors, but I also enjoyed the ospreys that were hunting trout and the numerous leopard frogs at the lakeshore. Teal Lake is like many other ...

For the fourth time, hundreds of endangered frogs were released into the Columbia National Wildlife Refuge with the intent to revitalize their population. The roughly 500 northern leopard frogs were ...

Drought, wildfires, invasive species and a deadly fungal disease isolated the once-abundant Chiricahua leopard frog to fewer ...

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 ...

A threatened Chiricahua leopard frog comes out from hiding in a special tank at a U.S. Fish and Wildlife Service office in Albuquerque, N.M. A U.S. Forest Service volunteer recently photographed the ...

In July 1952, Oconto, WI was overrun with an estimated 175 million frogs, as residents reported the amphibians covering ...

After years of failed attempts, a cohort of Oregon Zoo-reared northern leopard frogs has finally survived through the winter at the Columbia National Wildlife Refuge in eastern Washington. “We’ve ...

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 ...

Color in leopard frogs is determined by a gene that has two forms, or alleles, G and g. Each frog has two alleles, and frogs with genotypes GG or Gg are green, while gg frogs developmental rates ...