Fights between siblings
(Alton, Mo, USA)
I got a male & a female Great Pyrenees puppies 3 weeks ago. They were the last of the litter to go and they were alone together for 2 weeks. I got them when they were 8 weeks old. Everything was fine with them, they played at fighting and were affection with me. They went to the Vet yesterday to get wormed and more shots. When they got home, all seemed well, but when I went by them they started really fighting. Today was a repeat. I had 2 siblings before(both died) and we decided to get another. The other dogs were 4 months when we got them. Will these pups out grow this behavior or will I be forced to rehome one?