My cats started becoming very violent with one another about a yr ago and I dont know how to stop them. I have 3 male cats: 2 came from the same litter and they're about 6 yrs. and my other one is about 3. One cat is bigger than the other 2 and he started beating on his "twin" bro. Now, the one that was getting beat on is now harassing the kitten. I just broke up a fight between the 2 a few mins ago and my goodness was it violent. From the research Ive done (which isnt much) it's better to let them duke it out, but they're fights are so violent (at least it seems that way from a human's point of view) that am afraid they are going to seriously hurt each other. Would it help if they were neutered?