My four month old rabbit has recently developed red marks in his ears. They look slightly scabby but they are not similar to pictures I have looked at of canker or infections due to ear mites. He also has a slightly runny nose. He is eating well and still binkies and happy flops so his general well being seems fine. I have had a look through his fur to see if I can find dandruff or dry skin which also indicates mites but I haven't found anything. I have another rabbit who lives in the same room although they are in seperate cages and she has nothing wrong with her ears at all. Please can anyone advise as I don't know if it is perhaps the early signs of ear mites and I don't want my bunny to be uncomfortable.