Hello and thank you for taking the time to read and maybe answer my question. I have 12 male cats for the last couple of months almost all of my cats are bulling one of their own. My cats are different ages but ive had each of them since they were born. The cat they bully and fight with is Before he's 2 years old. Even the ones that are the same age bully him. A few of my oldest bully and tries to fight with him. They have never bullied before. Do you have any advice or maybe know why?