Dogs have 42 teeth, that’s 10 more than humans. Their jaws are designed to pull meat and skin from bone and to bite and grind bone. Their jaws only move up and down (we can move our jaws side-ways too). Dogs don’t chew for long, once the food is in manageable lumps they swallow.
We have enzymes in our mouths and start digestion there. Dogs do not. Canine digestive enzymes are in their pancreas and stomach. The stomach is especially acidic, far more than a human stomach.