With my two, I do not separate them. I get their dishes ready and they leave them until I move them to the spot they eat at and tell them ok. I do stay with them while they eat cause sometimes whoever finishes first will try to steal from the other, but their is no fighting or anything. I only try to stop it because Cincy is on the path of being overweight and the vet has asked us to keep her weight where it is or maybe even take a few pounds off her. Sadie is the opposite and can eat whatever and not gain an ounce Neither of them care if the other eats from their bowl, they are perfectly happy to share!