You do not need any teeth to eat meat because meat actually does not need to be chewed to be eaten. You need sharp teeth to tear flesh from a carcass. But we have hands and tools so we don't need sharp teeth for that. Dog's don't have hands or tools so they do.
Furthermore, you don't even need a stomach to digest meat. You can surgically remove the stomach from a dog and it will live. If you surgically remove the stomach from say a sheep, it will die. If you remove the stomach from a human, the human lives just like the dog. That is why stomach bypass surgery is a possibility.
Female, 5'3", 50, Starting weight: 163lbs. Current weight: 135 (more or less).
I can squat 192.5lbs, press 75lbs and deadlift 210lbs