I have 3 bunnies ruby is 2 yrs and has not been neutered, rory is 10 months and he is neutered , and roxi is 4 months they have all been getting on really well until tonite, where both ruby and rory r now fighting and chasing roxi !!!! she by the way came into her "prime" last week and wldnt leave rory alone.oh an they r house rabbits. Why the big change in attitude with the older ones and can anybody give advice to resolve it