I did get one that wouldn't stop the habit (but only one) and her babies were covered in urine. I had to clean her nest every day so the babies would survive. What a mess, I babywiped the kits. Culled her. I've never had another rabbit do that. I have my first 3 (or 4)spring litters coming tonight. Didn't breed anyone this winter. I just gave them more hay and 3 are making nests like crazy. Two mixed litters bred (NZ/Cali) and one Cali litter and one NZ. Hoping the pure Cali litter is happening the doe is older and not 100% sure she "took".