The Australian redclaw crayfish, an aggressive crustacean native to northern Australia and Papua New Guinea, has been spotted ...

An invasive crayfish species from Australia is posing a threat to the native crayfish species in the Rio Grande Valley, Texas ...

The young bird, found in only three U.S. states, had no way to free itself and was in ‘”serious trouble,” rescuers said.

Scientists have long suspected that Mexican long-nosed bats migrate through southeastern Arizona, but without capturing and measuring the night-flying creatures, proof has ...