A team of researchers from China and the University of Alberta have identified a pair of carnivorous dinosaurs with the remains of their last meals in their guts. The dinosaurs are wolf-sized, bipedal feathered predators called Sinocalliopteryx. One fossil contained in its gut the remains of a small feathered dinosaur. The other contained the remains of at least two primitive birds, in different stages of digestion. Both predators must have died and been buried not long after their meals. Scott Persons, a paleontologist and Ph.D student in the Department of Biological Sciences at the University of Alberta, was part of the research team. He's particularly excited about the find because knowing what these dinosaurs were eating tells a great deal about their behaviour, including what kind of hunters they likely were.