Relating Wolf Scat Content to Prey Consumed

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Abstract
Captive wolves (Canis lupus) were fed prey varying in size from snowshoe hares (Lepus americanus) to adult deer (Odocoileus virginianus), and the resulting scats were counted. Field-collectible scats were distinguished from liquid, noncollectible stools. In collectible scats, the remains of small prey occurred in greater proportion relative to the prey''s weight, and in lesser proportion relative to the prey''s numbers, than did the remains of larger prey. A regression equation with an excellent fit to the data was derived to estimate the weight of prey eaten per collectible scat for any prey. With this information and average prey weights, the relative numbers of different prey eaten also can be calculated.

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