The meaning of a cat biting another cat's ear:
1. Cats with ear mites will experience intense itching, which may cause them to bite their ears.
2. Skin diseases around a cat's ears can also cause intense itching, leading the cat to bite its ears.
3. If two cats are biting each other's ears, it may be because they have a good relationship and are expressing affection for each other. This is also a way of playing. 
Solutions for cats biting each other's ears:
1. If it is caused by ear mites, consult a veterinarian in time. If it is confirmed to be ear mites, you need to use ear cleaning solution to clean the foreign objects in the ear canal, and then instill ear mite-specific medication for treatment.
2. If it is caused by a skin disease, it is recommended to consult a veterinarian in time, or take your cat directly to a pet hospital for examination to confirm the specific cause before using medication.
3. If two cats frequently fight and bite each other's ears, accompanied by growling sounds, it indicates a poor relationship. The owner should separate them for feeding, otherwise they are likely to fight and get injured.
