Wyoming is home to 116 species of mammals. They range in size from the Dwarf Shrew with a total body weight of about 1/14 of an ounce to the massive American Bison weighing in at over 2,000 pounds. They flourish at Wyoming's lowest elevations in the prairie life zone around 3,100 feet and all the way up through the alpine life zone far beyond timberline and well above 13,000 feet.
Click on this Wyoming Mammals link or the image to the right to jump to a gallery displaying Wyoming wildlife photographs and video.
The number of Wyoming bird species ranges from around 300 to nearly 500 and depends on if you're counting residents or sightings. They live in underground burrows, mud huts attached to cliffs, hammocks of finely woven grass, floating islands of reeds and rushes, excavated cavities in trees and on piles of sticks that may weigh a thousand pounds. Some aggregate to breed and rear their young in large colonies, others isolate themselves to raise a single chick in secrecy and seclusion, and there are brood parasites that lay their eggs in the nests of others and abandon their offspring to be brought up by another species.
Click on this Wyoming Birds link or the image to the right to jump to a gallery displaying Wyoming wildlife photographs and video.
Wyoming's amphibians are a mixed lot and the species list includes the following types: 5 frogs, 4 toads, 2 spadefoots and a salamander. They breed and the resulting tadpoles grow in the temporary and alkaline playas of the Red Desert, and in the pristine snow melt lakes high in the mountains. It is only through their metamorphic change, from a larval stage to the adult body form, that they are able to gain a degree of independence from their aquatic environment and move on to land.
Click on this Wyoming Amphibians link or the image to the right to jump to a gallery displaying Wyoming wildlife photographs and video.
There are 30 species and subspecies of turtles, snakes and lizards that make the list of Wyoming's reptiles. A bite from one of these critters could be little more than a playful pinch from a Sagebrush Lizard, possibly cause the loss of a finger when inflicted by a Snapping Turtle, or maybe even result in death if envenomated by a Prairie Rattlesnake.
Click on this Wyoming Reptiles link or the image to the right to jump to a gallery displaying Wyoming wildlife photographs and video.