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Great Basin Naturalist

Abstract

Six accounts of pronghorn antelope (Antilocapra americana) chasing or attacking coyotes (Canis latrans) are described: three chases by individual pronghorn does, two by herds of antelope, and one joint effort by a pronghorn doe and a Short-eared Owl (Asio flammeus). Modifications of Berger's (1979) ungulate antipredatory defense model are proposed.

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