Big Bend National Park is located in the Chihuahuan Desert of West Texas and is home to a diverse array of wildlife species. The park's most notable mammals include the black bear, mountain lion, javelina, coyote, and gray fox. There are also numerous species of reptiles and amphibians, including the western diamondback rattlesnake and the Texas horned lizard. The park is a prime destination for birdwatchers, with over 450 species of birds documented within the park's boundaries. Additionally, the Rio Grande River provides habitat for a variety of aquatic species, including several species of fish and turtles. Overall, Big Bend National Park's unique location and diverse habitats make it a haven for wildlife enthusiasts and biologists alike.