go to the vet and get the ear stiched.
mites
I'm not sure...i know I'm not an expert on mice, but, mice are very cute and I'm pretty sure it's bad that the mouses' ear is bleeding.
Take it to the vets
The symptoms of ear bleeding would be blood coming from the ear or ears. Is the question more likely, "What are the causes of ear bleeding?"
Well if your ear does bleed then make sure that it doesn't get into the piercing which may cause into infection. Put pressure on the bleeding and it should stop and result in a scab. Hope this helps
You should go to the Doctor.
Well, its probably not good.
Take it to a vet. or go to a pet shop and ask them what they think you should do for it.
I think you should bring your pet mouse to the vet when its sick: running nose and or coughing hard. Bring your pet rodent to the vet if it has loss of appetite or bleeding.
Usually when a mouse ear gets crusty its because it has an ear infection or a tick (flea)
If blood is coming from the ear that means it an ear infection
its infected