As the trail wound its way into Arizona's Sky Islands, the region's biodiversity was on full display, as were the threats from rising temperatures.

Arizona is home to dozens of snake species, including venomous varieties such as rattlesnakes and coral snakes. But many snakes in Arizona are nonvenomous, meaning they pose little threat to people or ...

Arizona is home to many kinds of rattlesnakes. Take a look at the different species that live here and the different places ...

Saguaro Park in southeastern Arizona, near Tucson, offers a landscape unlike anything you’ll see elsewhere. The park hosts ...

Gopher snakes, kingsnakes, coachwhips and glossy snakes are common nonvenomous snakes in Arizona. Nonvenomous snakes are generally harmless, they can bite if threatened. Their bites can cause minor ...