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3. A bullfrog. These unique tracks reveal all four feet of a frog. The top two tracks are the frog’s front feet, which have four clawed toes that face inward. The hind feet (bottom) are significantly larger than the front with five clawed toes. Most of the time, only the toes of the frog’s hind feet register in tracks. Frogs come in all sizes. The track pattern of a large bullfrog track like this one measures about 4 inches wide.