Not sure what this proves: Our cats figured out somehow that I’m the one who feeds them. They jump on my head to wake me up in the morning. They follow me around the kitchen when they’re hungry. Yet, even though they’re smart enough to figure that out, they haven’t twigged to the fact that I hold a grudge and I’m not above a little vengeance now and then. I’m no Einstein, but even I know better than to piss off the person who feeds me. I think I learned that before I could speak.