My rabbit, Ebony is 5 years old and has been moulting really badly, she's been losing lots of fur, a lot more than usual. On the top of her back there's a patch that's really thinned out, she's not biting or scratching and it's not coming out in clumps, there's no dry skin so it shouldn't be mites. I'm just concerned as this is a new thing and all her fur is so thick accept for this one patch on her back. Do I need to be worried? She should be going to the vet soon as I'm getting her spayed so the vet can give her a look over too but do I need to be taking her in asap?