Toffy

2 brother rabbits Oreo and Thumper living in the same cage since february. They are both around 7 months old indoor rabbits. In April they started humping each other and in the 15th of May they were both castrated. They are both dominant and suddenly started to attack each other. It's not too often that this happens but on Thursday this week, they were both out of their cage and suddenly one attack attacked the other and pulled a chunk of his ear. Unfortunately they don't getting along with each other.