My Gracie is 16 weeks now. She is constantly jumping on (and over) and biting on my Shih Tzu who is 14 yrs old and almost totally deaf and blind. The only place Skittles can go is up on a chair but now Gracie can jump up on them too. Skittles is so gentle that she won't snap and doesn't even growl much at the puppy, she just tries to escape. I yell no all the time at Gracie but it isn't helping much. Any suggestions to get the puppy to lay off Skittles?