The infamous drug lord Pablo Escobar was notorious for smuggling cocaine, but perhaps less known for illegally importing exotic species to his personal zoo.

Giant swamp rats are taking over the U.S. and destroying fragile ecosystems from Maryland to Oregon.

As many as 23 million feral pigs have taken over Australia, causing an untold amount of damage.

A moose in the country is no big deal, but a moose in a New York suburb is a recipe for disaster.

Coyotes are invading backyards across America. With sharp teeth, wily intelligence and a body built for speed, these formidable predators can adapt and survive in nearly any environment.

More and more people are falling victim to one of mans oldest parasitic pests, one that lives in colonies hidden in our furniture and literally drinks our blood while we sleep: bed bugs.