such as Coffee Ranch in Texas, Borophagus was contemporary with the bear Agriotherium as well as the feliform Barbourofelis, the saber-toothed machairodont cat Amphimachairodus coloradensis and fellow canid Epicyon. All of these animals were potential competitors that would have occasionally conflicted with Borophagus for food and territory, though it may also have readily scavenged their kills. Prey for Borophagus included herbivores like the camel Aepycamelus, the pronghorn antelope Cosoryx, horses like Neohipparion and Nannippus, the ancient peccary Prosthennops and even rhinoceroses like the hippo-like Teleoceras, all of which could provide a suitable meal through hunting or scavenging. References Alan Turner, "National Geographic: Prehistoric Mammals" (Washington, D.C.: Firecrest Books Ltd., 2004), pp. 112–114. Xiaoming Wang, "The Origin and Evolution of the Dog Family" Accessed 1/30/06. Further reading Picture of an Osteoborus skull in a museum, from "World of the Wolf." (Accessed 6/19/06) Russell Hunt, "Ecological Polarities Of the North American Family Canidae: A New Approach to Understanding Forty Million Years of Canid Evolution" (Accessed 1/30/06). Wang et al., "Phylogenetic Systematics of the Borophaginae (Carnivora:Canidae)." Bulletin of the American Museum of Natural History, No. 243, Nov. 17 1999. (PDF) (Accessed 4/11/06) Xiaoming Wang, Richard H. Tedford, Mauricio Antón, Dogs: Their Fossil Relatives and Evolutionary History, New York : Columbia University Press, 2008; Borophagines Miocene canids Pliocene carnivorans Neogene mammals of North America Prehistoric carnivoran genera Fossil taxa described in 1892