Tyrannosaurus was an obligate scavenger and that there have only been a few studies to directly support the idea of Tyrannosaurus as an obligate scavenger. John Hutchinson, writing in his blog state that most scientists agree that Tyrannosaurus switched between being a predator and scavenger; not turning down a meal either dead or alive. Hunting strategies Various proposals have been made regarding the ways Tyrannosaurus may have hunted. Though adult tyrannosaurs are often depicted in art and other media as frequently attacking other giant dinosaurs, research suggests this type of behavior would have been rare. As with other carnivorous dinosaurs and modern carnivores in general, Tyrannosaurus probably preferred to target small prey animals, including juveniles of larger dinosaur species. A 2010 analysis by Hone & Rauhut suggested that this may partially explain the general lack of small and juvenile dinosaur skeletons in the fossil record. Tyrannosaurids like Tyrannosaurus appear to have been specialized to crush and likely ingest the bones of their prey, and predation of juvenile dinosaurs would therefore have left fewer skeletons to fossilize. Some studies also suggest that Tyrannosaurus preferred different prey at different stages of its life. In K. T. Bates and P. L. Falkingham's 2012 study, they found that there was a great disparity between the bite force of adult and juvenile Tyrannosaurus. According to the study, Tyrannosaurus only gained their powerful bite forces during their adulthood. This, according to the pair, suggest a difference in feeding ecologies between juveniles and adults; that the animals may have fed on different prey items at different stages of their lives. They propose that the powerful bite forces of adults may have allowed them to act as large prey specialists and thereby alleviate competition with younger tyrannosaurs. The juveniles according to the scientists were long-legged runners, but had relatively shallow skulls that were incapable of anchoring the muscles necessary to generate an adult Tyrannosauruss bite force. However, when the animals grew their jaw muscles grew exponentially to the point that these muscles were huge even for animals of their size. The scientists suggest that juveniles chased after small prey while adults had the power to prey on megaherbivores such as Edmontosaurus and Triceratops. The scientists call this phenomenon as resource partitioning which would have given Tyrannosaurus a large evolutionary advantage. Horner, Goodwin and Myhrvold's 2011 census makes a similar proposition, proposing that adult Tyrannosaurus may not have directly