The Old Man and the Whipper Snapper

We have two dogs.The eldest, a collie-lab mix, in his fifteenth year, is getting weary of his daily routine of two meals, trips down the garden and much sleep. The youngest, a beagle, in his second year, can't understand why he won't play with him. He nips at the old man's back legs and gets verbal abuse back. The Whipper Snapper has a dynamo inside him and never tires...I was warned about the breed before I fell for the puppy dog eyes and the white stripe across his bottom. I still handed over the reserve cheque and dismissed any doubts. Oh we love him and he loves us but he wants to be doing all the time...even during this hot weather. He joins the girls on the trampoline when permitted and has no fear of the unfamiliar undulations of it. He will miss The Old Man when his times comes. He will look for him and track his scent. But he won't look for long. There are so many other things he could be doing.