We just got a new 3 month old puppy she's a husky Shepard mix. Our dog of 5 years is a small papi ooo when we brought her home everything was done until she batted at the papipoos face to much so he snapped at her. She would just back off but he did it so much that she began to fight back. And now that she is growing (now 4 months) she's the one attacking him. Everytime they're together her fur is up and the papipoo is tense. Is there anything we can do to stop this?