During the off season when fewer tourists are around, you are more likely to see some of the local wildlife on the trail to the caves, or on hiking trails in the area. While hiking in the region keep an eye out for the wide variety of wildlife in this small park.
The environment created by the steep-walled American Fork Canyon, and the river near the monument, harbors many animal species. Common sights are ringtail cats, long tailed weasels, raccoons, squirrels, chipmunks, pack rats, and bats.
Although not as common, you may spot larger mammals such as mountain goats, bighorn sheep, mountain lions, moose, mule deer, or black bear in the region. Watch out for reptiles like the great basin rattlesnake on local trails. Other reptiles in the area include gopher snakes, rubber boas, and sagebrush lizards.
Birdwatchers may see American dippers, broad-tailed hummingbirds, canyon wren, orange-crowned warblers, western tanagers, violet-green swallows, and Steller's jays which are common to the canyon. Eagles, wild turkeys, hawks, and falcons are also occasional visitors to the park.