>I think we'll have to start culling them within a few years, they're becoming an infestation and are simply too intelligent for their own good.

i wonder why we tend to treat that as infestation instead of celebrating that at least some wildlife is able to coexists with us. We lived in a house in Palo Alto and the big family of racoons lived under the house and on the nearby redwoods. It was pretty enjoyable and fun.