The large feet act like snow shoes spreading the wolf's weight out evenly across the snow. Wolves are often running from 8-10 hours per day. Some wolves have been spotted running 22 miles without stopping. Wolves are found at the top of the food chain. A food chain shows how energy or food is passed from one living thing to another.
Wolves keep the population of old and sick animals in check.
If wolves disappear than hundreds of other animals will be affected. It is crucial for these intelligent animals to survive in order to maintain healthy forests. Next time you are in the woods in the border country, try howling at night and then listen. Dudley, K. 1997. Stensaas, M. 1993.