Not too sure if it's just the little ones, cuz Lucky is 10lbs and when ever I would leave him in the kitchen and block it off with a baby gate, I would find that he managed to jump up into the sink and then over the counter into the living room.
I caught him one time. He was on time out in the kitchen with a baby gate and I had gone upstairs. Suddenly I heard this loud noise so I went to check on him and found him standing in the sink. Bad puppy, but slightly funny!