PORT ST. LUCIE, Fla. — You know them for their bulging eyes, webbed feet and distinctive raspy call. You've probably seen them (or likely heard them) in your backyard. We're talking about the invasive ...

Researchers have discovered seven new species of tree frogs that make otherworldly calls in the rainforests of Madagascar. Their strange, high-pitched whistling calls sound more like sound effects ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. **Related Video Above: Exotic tick ...