Cats like to eat mice, which is well known, so the main reason people kept cats was to catch mice, but that was people's idea in the past. Old houses were mostly made of earthen walls, which made it easy for mice to burrow holes in the walls and store food in grass-woven granaries. Nowadays, cats are mainly kept as pets. The relationship between cats and their owners feels like that of children and parents. Cats accompany their owners like children, staying close by or affectionately snuggling at their feet. When the owner is sitting, the cat climbs onto them; when the owner sleeps, it crawls into the bedding. This intimate relationship often generates special feelings toward the cat.

One day, if you suddenly find black stuff on your cat’s nose, it might be dust accumulated because the cat has roamed around dirty places. Since the nose is moist, some dirt sticking to it is normal. But if the black dirty unknown substance frequently appears repeatedly, you might have to consider whether it is mild folliculitis. If confirmed, feed the cat some cat grass to adjust the oil content in its food. If a kitten younger than two months shows this condition, pay attention to air circulation in the room and keep the temperature cool. In summer, lack of airflow combined with high temperatures fosters fungi growth. Kittens have weaker immunity, and poor air circulation makes recovery difficult and may endanger the kitten’s life. Generally, healthy cats can self-heal.

It is also possible that mites or fungi are involved, which often occurs in stray cats. They need more sunlight and sulfur soap baths; the cat's body will develop resistance against such agents and shed them over time. Both the cat and the cat’s bedding should be often exposed to sunlight, whose ultraviolet rays kill molds and mites. Choose a quiet time when the cat is calm, grasp a small patch of fur at the back of its neck, and gently lift its body with slight force. Sit on the sofa and let the cat rest its body against your thigh to keep it relaxed.

Prepare cotton swabs in advance, but do not use large cotton swabs around the cat’s nostrils or inner walls to pick or wipe gently. Never insert the cotton swab deep into the nostrils, as this can damage the inner tissue and irritate the cat.