One of my cats, Tyke, is extremely dumb. He'll eat anything which is edible, he can't hunt and taps on the ground so the bird he's after hears him. Once, he was jumping off something about 10cm high and misplaced his footing so fell over, almost doing a sort of back flip onto the patio. He goes down fox holes. He seems more like a dog. Once, when he was sitting in the living room, someone was walking up the drive at the front and he left to see what it was, growling. xD