Stomach ,head, and finger

Question
i have four gerbils (Oreo and Bonnie in one cage and Emma and Molly in another (Emma and Molly attacked Bonnie (we didnt want to leave bonnie alone) so we moved her wit oreo who did nothing). they all have bald spots on their stomachs wait is that?
Also Bonnie's head is stuck crooked. WHAT DO I DO?
Emma lost her finger she is feeling fine. But wait happened?

Answer
Hi there,

All gerbils have bald patches on their stomachs, it is where their scent gland is located and is totally normally, so don't worry!!!

You may want to get bonnie checked over by a vet as she maybe injured, or have an ear infection or other illness, depending on her age!!!! Whilst you wait to see a vet make sure she is eating and drinking normally!!

I wouldn't worry about the finger as long as it looks ok, not sore or swollen or infected!!! Keep an eye on it! She may have lost it in a fight or scuffle!!!

Hope this helps,
Charlie.