The survival situation for various carnivores is very different. Hyenas/lions/wolves etc bring down much larger prey than domesticated ferrets, and unlike ferrets, they hunt for survival. The smell of fermenting plant matter in the preys stomach attracts other predators to a kill (with lions and hyenas the young will be nearby, and are under threat from other predator species), so the stomach/intestines are either quickly eaten to help avoid competition over the kill, or the stomach/intestines will be buried to help eliminate the smell carrying. Lions and Hyenas do not reguritate for their you