I purchased a mother rabbit last year and a week later she had babies. Not sure if the father of the babies were the mother's brother or if that makes a difference. But in the last few months 2 of her offspring has had litters. The 1st one deheaded most of her young. We thought maybe a rat also, since we do have a farm. The other one had a litter last week. She has made a big nest for them. 3 of the 6 were separated at birth and didn't make it. This morning she or the rat has deheaded one. What should I do.