Please help

I have 2 female rabbits that tend to hump each other, i thought this was just them showing their dominance but now one of them has lost a lot of fur on her back.

Does anyone know the cause of this? is it that the other is biting/pulling it out when humping?

if so what do i do to stop it?

Any advice would be great!!

Are they spayed? If not, I would definitely recommend having them both done x

Sounds like it could be female hormones. Are they old enough to spay?

My two are spayed and the humping has settled down but Olive does still hump Grace occassionally. Gracie went to the vet today for a dental. Olive stayed at home and the first thing she did when they were reunited was go to mount her. Girls!