Welcome to our forum.
[glow]I am not trying to start anything[/glow], BUT I will say, in my experience, the loving muts that you find at a shelter are smarter and adapt better than any pure bred $$$dog you will find.
I didn't say anything about cats..but since you brought it up...My bird is smarter than your cat .. and I'll put money on that statement!
Our youngest male taught himself how to open door knobs and can go through a door no matter which way it swings [he either pushes it through or holds the knob and backs up on his hind legs]. So we put entrance lock knob sets all throughout the house, all keyed the same.