I can't help feeling when viewing this sort of thing that we are laughing at them rather than with them.
Having said that I've had animals in the past and dogs especially do seem to have a sense of humour. One of ours would hide and then leap out at the kids, or take great pleasure it seemed in hiding my cars keys - but maybe he just wanted to make sure we took him with us when we went out. Head out of the window and dribble down the glass time.... and that was just the dog!
Don't limit the friends you haven't met with arguments you'll never have.