After a 5.2 magnitude earthquake struck Southern California, elephants at the San Diego Zoo reacted instinctively, forming what is known as an "alert circle" to protect their little ones.

Here are our favorite types of freshwater fish you can keep as a pet. If you're in the throes of setting up a home aquarium, ...

In Presque Isle, Pennsylvania, a giant goldfish was caught during an electrofishing survey. It serves as a reminder of why it isn't a good idea to release pets into the wild. The U.S. Fish and ...

If you think you're doing the goldfish a favor by releasing it, you're not! Instead, you're setting the stage for an ecological disaster, which could threaten hundreds of other species.

If you've ever heard the urban legend about released pet alligators growing to colossal sizes in sewer systems, you might be ...