Sores on Ears

Question
I bought a bunny from a pet store the other day. Hes a lop eared bunny and quite the little cutie. Im worried because I found little sores on his ears. One is really visable, but the rest feel like tiny bumps and that may just be the texture of his skin. What can be causing these sores and how should I go about treating them?

Answer
Alyssa, inside or outside of the ears ?  If they are inside it is probably ear mites.  This can be treated with drops of vegatable oil in each ear, once a week for 4 weeks. They hate the treatment !   The oil should cover all of the inside of the ear.