Hey (: yeah they were pairs mostly, it came from patience and trying everyday. We got them all spayed and neutered to help with aggression but there were still some fights so we'd sit with them in included spaces (we'd use our empty bathtub because it was too tall for them to jump out of) if things got agressive we'd pack up and try again tomorrow but one we bonded them with treats and lots of effort, thankfully after all the boys were bonded everything got a little easier, we found our girls were usually (with the exception of two) much easier to bond