I was having that problem with my 2 girls there some months ago. They were really going for it and I done what you were doing by puling them apart right away. I released by doing this they were getting worse. So 1 day ,I no this sounds cruel, I ignored them, well they stopped almost right away when they released I was ignoring them. After this they havent fought again, I think they were just trying to sort out the domiance thing.
__________________  Missy Boots Betty |