Park rangers in Chester County, Pennsylvania, found an invasive snakehead fish in the Schuylkill River this week.

If you're spending time outdoors in Louisiana, it's a good idea to know which plants may cause allergic reactions. More about these 9 poisonous plants ...

Think the biggest threat on the beach is a sunburn? Think again. From lethal sharks and venomous fish to apex predators ...

Invasive species can wreak havoc on ecosystems. Now, researchers have identified dozens of non-native animals that are likely ...

The Everglades are the most snake-infested area in the state, primarily due to the invasive non-native species, the Burmese ...

The ocean's depths harbor dangerous fish equipped with venom, sharp teeth, and electric shocks. Stonefish inject venom ...

A new study reveals that eating raw freshwater fish could expose you to dangerous parasitic worms that are spreading across ...

Getting finned when fishing is never fun, but did you know catfish can release venom? What to know in Mississippi ...

But rattlesnakes aren’t the only venomous snake species Floridians could encounter ... according to the Florida Fish and Wildlife Conservation Commission. When threatened, this pit viper ...

These include venomous reptiles like puff adders and spitting cobras, and freshwater fish; similar species that have already established themselves as invasives have wrought havoc on native ...

Six venomous snake species are native to Florida ... and many species thrive in residential areas,” the Florida Fish and Wildlife Commission (FWC) says. “However, there are just a few ...

California has nearly 50 native snake species, including rattlesnakes, the only native venomous snakes in the ... according to the California Department of Fish and Wildlife.