When Brian Hughes, 33, and wife Stephanie Hughes, 33, went strolling along the San Antonio River Walk on Tuesday, they didn't expect a scene from a nature documentary. But they caught full view of a ...

The diamond-backed water snake eats fish, especially slow-moving or dead fish, frogs, toads and salamanders. The Western cottonmouth is primarily a fish-eater but also eats frogs, other snakes, ...