Sounds like typical puppy behavior to me. The older dog should have a place where he can get totally away from her so she cannot continue to annoy him all day long.
Ringo's place was on a very high chair that Lucy simply could not reach when she was a puppy. He would go there often for his naps and when he had had enough of her pestering him.
For a 5 year old dog - there is a time to play and a time when he will want to be alone!
Good luck!
__________________  Mommy to Lucy, Ringo, and Matthew |