Invasive fish species is known for breathing on land, 'walking' to new water. It harms nature in Mississippi; kill it on sight. Here's what to know ...

Two Arizona national parks were named among the best parks for seeing wildlife like mountain lions, bison and birds. Here's where to go to see animals.

The most venomous snakes in Arizona include rattlesnakes, sidewinders and coral snakes. Here's where they live and how to ...