..by tomorrows puppy playdate. Koda my 11 week girl pup will be playing with one of her sister/littermate. Problem, last time she was over, last week, there were some nasty sounding fights. They were playing and then one of them would get too rough and holy toledo, you would think I was running a dog fighting ring. Hair standing up, snarls, growls, and going after each other. It had to sound worse than the bites... I hope. When it got super serious I would get in between, make them lay down near each other until they were relaxed and focused on me (10-20 seconds). Then within a minute they were back to play attacking. I started to think maybe I shouldn't step in betwee and let them work it out...but will one get hurt. Koda was more dominent in the litter, but sister Osa was seems to have found her backbone. Watching them I saw them both acting as the aggressor. Koda does weigh 4 pounds more than Osa, I would hate for her to really hurt Osa (that might be a irrational fear since I saw Osa put Koda in her place a few times). The whole thing is I didn't expect this since they were littermates, and they really need to get along. Next week I am taking them both to the vet, and the reason my sister-in-law and I got littermate pups is so they would get along fine during campouts, parks, holidays, cousin sleep overs. I just need to know how to handle this tomorrow... to I step in at the first sign of aggression, only when it gets nasty, or just let them duke it out? Last week all the cousins (Osa owners) were over along with my three, so I am sure the energy did not help much. Tomorrow will be just me so that I can work on it.