A small hard bump on a cat's ear may be caused by mosquito bites, tinea felis, or auricular hematoma. First of all, when a cat is bitten by a mosquito, a small bulge will appear on the ear, which will usually disappear in about 2-3 days. Secondly, when a cat suffers from tinea felis, hard scabs will appear on the ears, body and other parts, and it needs to be treated with drugs containing terbinafine. Finally, if the cat suffers from auricular hematoma, small hard bumps will also appear on the ears, and it needs to be sent to a pet hospital for treatment in time.

1. Being bitten by mosquitoes

Although cats have thick hair, the hair on their ears is relatively sparse, so when there are many mosquitoes in summer, they are easily bitten by mosquitoes and develop small hard bumps. This situation is not a big problem and usually disappears in about 2-3 days. However, when there are more mosquitoes in the summer, the owner can install mosquito curtains to prevent mosquitoes, or use methods such as swatting mosquitoes and plant insecticides to repel mosquitoes. However, do not use mosquito repellent products such as mosquito coils and electric mosquito repellent liquids. Long-term use can cause cat poisoning.

2. Suffering from tinea felis

When a cat suffers from tinea felis, the cat will often scratch its ears with its hind legs due to itching, resulting in hard scabs on the surface of the ears, which will also be accompanied by Symptoms include redness of ears and hair loss. For cat scab, it is necessary to go to the pet hospital for scraping examination in time, and then treat it with drugs containing terbinafine, and wear a collar on the cat to prevent further scratching. If not treated in time, it will transform from small hard bumps into large areas of cat ringworm, spreading to the whole body and affecting the cat's normal life.

3. Auricular hematoma

If the cat suffers from auricular hematoma, small hard bumps will also appear on the ears, and there will be obvious fluctuations. If the cat is punctured, a large amount of fluid will flow out. Bloody water. The main reason is that after the auricle blood vessels rupture, blood continues to accumulate between the auricle skin and cartilage, and then swelling occurs. If a cat suffers from auricle hematoma, it should be sent to a pet hospital for treatment in time.