As wild burro populations grow, they're putting native vegetation at risk, a new study shows, including the saguaro cactus.

Arizona's Tonto National Forest is one of America's prettiest urban forests, located a short drive from the Phoenix metropolitan area. It's a land of striking mountains and rock formations where cacti ...

Wild horses kept getting stuck in a dangerous mud pit, so advocates in Arizona took a stand. Screenshot of Friends of the Heber Wild Horses' posts on Facebook A herd of wild horses and newborn foals ...

On a warm Wednesday afternoon, one burro with tan fur and large ears wandered the streets and desert surrounding Lake Pleasant with its herd. Many of the wild donkeys roam near the lake because it ...