The weather is cold, the dog doesn't eat, has no spirit, and his ears stink. After never eating anything, they scratch hard. What are the symptoms? How to treat

There should be ear mites. Symptoms: Brown earwax or foul smell. Dogs often shake their heads and scratch their ears, which is easy to infect their paws and then spread to other parts of the body through their paws. Because of the different degree of infection, symptoms will be slightly different. Erjingkang can be used to treat otitis and ear mite infection. 7- 15 can be cured, and severe cases can be treated with antibiotics. Dogs and cats have L-shaped ears and long hair, which is beneficial to the growth of bacteria. Under normal circumstances, it should be washed once a week with ear washing water.