I 3rd Sue's response,also maybe try a light diet of white chicken only,sardines,tuna or white fish,cheap,easy to cook if needs be and very affective,plus you can mish and mash them in a few ways to vary (in their mind)what they are getting Good luck with your Flintstone babies,great names btw and i'm sure once they have been neutered/spayed they will calm down quite a lot with each other