Mine hasn't had a chance to try for squirrels yet, but I'm sure she'd LOVE to try! As for the climbing bit...she unfortunately has great skill in that department. I can't leave anything remotely edible on the table unless there's nothing she can scoot over to get up on the table. And scolding doesn't seem to do any good! The labs we had growing up wouldn't do things again if they'd been caught and scolded - they HATED to offend us. Dachshunds, on the other hand, have no consciences...
But they sure can put on the 'pitiful face' when fussed at, can't they?