One animal's predator is often animal's prey, but not with these species. Many of them are too tough to be taken down, though ...

About 50 Sonoyta pupfish were released into an artificial stream inside the University of Arizona's Biosphere 2 on Friday in ...

Happy Feet was kept in a doghouse that his owners only checked once every 2 weeks, with only a dish of rainwater to drink and ...

The Upper Mississippi River National Wildlife and Fish Refuge spans more than 240,000 acres and stretches 261 miles across ...