Yes, some of ours can open cabinets. The phone books and cat food are kept in one cabinet, and that's generally the one they go for. Though I'm not sure why, as they can't get to the cat food; I keep it in a Tupperware container.
When I was 18 or so, I lived with one of my older brothers, Matt. He had a weimaraner
. Thunder was quite the Houdini and ate all kinds of stuff he wasn't supposed to. Matt's kitchen cabinets didn't have handles; you pushed them in and they "sprung" out. One day I was home alone with Thunder, and some friends dropped by. I went outside for five minutes. FIVE MINUTES. When I came back in, one of the top cabinets was open, and he had the jar of peanut butter out and opened (ripped the lid off with his teeth, I guess) with his face buried in it, and a bag of Cheerios ready to go for when he finished off the peanut butter.