I have 4 bunnies. Before we got the 4th, we spent a week bonding the 3; 2 females and a male, the girls did not get along. When we got the 4th, a male, they actually all excepted him no problem. He became buds with the other male. All are fixed. Just this past week our first male is fighting with the other male, and our 1st female is picking on and chasing the other female. What's going on? So, Romeo is fighting with Louie, and Cookie is picking on Tootsie.