...is excellent for our respective mental health! Billy is indefatiguable.  He plays most time of the day. At least 4-5 play sessions a day inside the house. We don't play tennis ball with him because the surgeon said no due to his  teeth surgery. I bought him a malleable ball full of openings that bends with every bite (hard to explain), and this seems safer to play in the yard with him for his poor bad teeth. 

More photos of the dogs, taken today