My daughter left for college. She had three ferrets, one is left alive now. I have to clean its cage and feed and water it. It looks lonely; it wants to come out and play. But once out of the cage, it doesn’t “interact” on a personal level. Not like our cat who went around *shredding* everything once my daughter had been gone for a week. Cats have more personality. Dogs, apparently even more. Is this related to gyri and sulci in the brain? Brain size? Internal wiring and size of different brain regions? It comes back to the idea...