Wolves may travel as far as 30 miles in a day. Although they usually trot along at 5 mph, wolves can attain speeds as high as 45 miles per hour for short distances. Indirectly, wolves support a wide variety of other animal populations. Ravens, foxes, wolverines, and even bears feed on the remains of animals killed by wolves. Wolves also help regulate the balance between ungulates (hoofed animals) and their food supply. Wolves are noted for their distinctive howl, which they use as a form of communication.