Yeah. When I lived in NJ, there was a guy in the condo complex who kept a Great Dane in a second-floor, one-bedroom unit. When the weather was good, he left the dog out on his deck all day. The dog would bark ferociously at anyone who walked by below. I don't think he wanted to attack; he just wanted to interact and run around. But he could easily have jumped the deck railing, and I always worried that he didn't realize how much of a drop it was. So I usually avoided walking by there when he was out.