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 ...

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 ...

Alan Zhou / OPB Plans to develop a new population of endangered frogs are hopping along in Eastern Washington. This month, nearly 100 northern leopard frogs reared at the Oregon Zoo were released into ...

Add Yahoo as a preferred source to see more of our stories on Google. The government of Alberta, Canada, announced that reintroduction efforts to help northern leopard frog populations bounce back ...

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 ...

New York state environmental officials are planning to update their list of endangered and threatened species as part of a push to protect animals that are at the brink of extinction. Those include ...

PORTLAND, Ore. (KOIN) — The Oregon Zoo release 100 northern leopard frogs into the wild in August to bolster the endangered species’ dwindling populations. The zoo already released more than 50 ...

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 ...

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 ...