Wolves

Wolves run on their toes, which helps them to stop and turn quickly and to prevent their paw pads from wearing down.
Under certain conditions, wolves can hear as far as six miles away in the forest and ten miles on the open tundra.
A wolf pup’s eyes are blue at birth. Their eyes turn yellow by the time they are eight months old.
Wolves have about 200 million scent cells. Humans have only about 5 million. Wolves can smell other animals more than one mile (1.6 kilometers) away.