Here is Otis starring in a short feature film called, Otis and the Big Storm.
Did you notice he's walking? At 6 months old, he's only been walking independently for a few weeks. When he's outside tackling all types of terrain, he is supported by a band fastened to a leash. He recently advanced from having the band around his waist to having it around his chest. His muscles are strong enough now for him to support himself, and make coordination corrections. :-))