Um, dunno if this is new or not, but anything that it can get prime from after taming it can pickup and kill wild. Just lost a nice Lystro to it. They don't leave a bag of the non-food items behind, either, so you lose EVERYTHING the Dino was carrying for you; mats, tools, structures and skins go poof.
Me and a mate were walking home on dinoback with our two newly tamed pegomastx. We both had monkeys, so they had to walk. All of a sudden, a seagull swoops down and PICKS UP A PEGO. It started to fly away, but a slug from my shotgun turned it into Swiss cheese. Pilfer (the pego) was fine but traumatized. Never underestimate an icthy