Are there any dangerous wildlife encounters to be aware of on the Montana Trail?

The trail has a range of animals from bears and mountain lions to mice and insects. You will likely see marmots, squirrels, deer, elk, bighorn sheep, mountain goats, antelope, and a variety of birds. The Montana Fish Wildlife and Parks has a number of informative pamphlets on wildlife in Montana. A number of tail sections cross Grizzly Bear habitat and users should be bear aware and carry bear spray in those trail sections. It is best to take proper precautions with your food. One option is to hang your food using scent-proof bags or bear canisters. Rattlesnakes are also present in central and eastern parts of the state, including in and along the Missouri River, so be watchful.