The Spotted Hyena has the strongest jaws of any carnivore. They can crush the hardest of animal bones. But the Tasmanian devil, has the strongest jaws for it's size, it is stronger than a lions.
The Hyena, it commonly crushes the thigh bones of Buffalo to get to the nutritious marrow inside. Its scats (Faeces) are often white because of the high content of calcium from crushing and eating bones.