Causes of black nose in cats:

1. Endocrine disorders. The reason for the blackening of the tip of a cat's nose is the cat's endocrine disorder, especially abnormal melanin metabolism, which causes melanin to be deposited in the nose, causing the skin color to change from light to dark.

2. Ultraviolet stimulation. Cats are overly stimulated by sunlight or ultraviolet rays, which causes nasal cells to secrete various pigments that block sunlight to protect cells from ultraviolet damage.

3. Cat nasal branch. Cats infected with rhinorrhea may sneeze, have purulent nasal discharge, etc. The purulent nasal discharge may cause the nose to be black and dirty.

4. Growing older. As cats get older, their noses will become pigmented, ranging from pink to black, which is normal.

5. It is possible that the cat’s nose is naturally black. There is no need to panic for this reason.

6. If the cat’s nose also appears black, it is most likely caused by fungi, accompanied by hair loss. This can be resolved with antifungal medications.

7. If it is caused by parasites, you need to go to the pet hospital immediately for deworming treatment.

Methods to deal with black cat nose:

1. Avoid sunlight. You can wet a paper towel or towel and use it to wipe the black part of the nose clean, and avoid direct contact with the sun or ultraviolet rays on the cat's nose.

2. Inject an appropriate amount of hormones. If the cat is caused by endocrine disorders, the owner can take the cat to the pet hospital and inject it with an appropriate amount of hormones to maintain the balance in the body.

3. Feed lysine. To deal with the cat's nasal branch in a timely manner, you can feed lysine and mix it in the cat's food. The dosage can be determined according to the age of the cat.