Some vegetarian writers try to rationalize away humanity's evolutionary past as hunter-gatherers by claiming that prehistoric humans were at best occasional scavengers and poor hunters. A recent review article torpedos such claims for the nonsense they are. "Early hominid hunting and scavenging: a zooarcheological review" M. Dominguez-Rodrigo, T.R. Pickering Evolutionary Anthropology 2003, vol. 12, 275-282 >From p. 281: "Thus, in summary, the preponderance of zooarcheological data indicate that hominids in East Africa were gaining regular access to largely fleshed ungulate carcasses and were exploiting these carcasses fully for meat and intramuscular fat, with less emphasis on marrow harvesting. Although Plio-Pleistocene archeofaunas and innovative actualistic research hold the potential to modify this interpretation of the carcass-foraging capabilities of early hominids, scenarios of hominids as passive scavengers, relegated to the role of marrow scroungers, are not currently supported." Tom Billings