artery , or trachea (windpipe), rather than slashing the abdomen. The inside edge of the claw was rounded and not unusually sharp, which may have precluded any sort of cutting or slashing action, although only the bony core of the claw is known. The thick abdominal wall of skin and muscle of large prey species would have been difficult to slash without a specialized cutting surface. [ 28 ] The slashing hypothesis was tested during a 2005 BBC documentary, The Truth About Killer Dinosaurs . The producers of the program created an artificial Velociraptor leg with a sickle claw and used a pork belly to simulate the dinosaur's prey. Though the sickle claw did penetrate the abdominal wall, it was unable to tear it open, indicating that the claw was not used to disembowel prey. Remains of Deinonychus , a closely related dromaeosaurid, have commonly been found in aggregations of several individuals. Deinonychus has also been found in association with a large herbivore, Tenontosaurus , which has been seen as evidence of cooperative hunting. [ 31 ] [ 32 ] The only solid evidence for social behavior among dromaeosaurids comes from a Chinese trackway of fossil footprints, which shows six individuals of a large species moving as a group, though no evidence of cooperative hunting was found. [ 33 ] Although many isolated fossils of Velociraptor have been found in Mongolia, none were closely associated with any other individuals. [ 26 ] Therefore, while Velociraptor is commonly depicted as a