Canines and Felines
Canines and felines leave behind tracks that show four toes on front and hind feet. Cats will not leave claw marks in their tracks, but canines such as the wolf, fox and coyote typically do.
Rodents
Members of the rodent family make tracks that show front feet with four toes but back feet that have five. Some rodents like the larger porcupine will make tracks much larger than smaller ones such as mice and voles.
Weasel Family
The presence of five toes on every foot in a track indicates the animal that made the track was part of the weasel family. Raccoons, beavers, bears and opossums have five toes on each foot as well.
Ungulates
White-tailed deer track.
The ungulates such as elk, moose, deer, caribou, pronghorn antelope and bison leave a two-toed print in the snow or ground.
Size
Measuring the diameter and length of a track, then referring to field guides of animal tracks from your region can aid in helping to identify the print.