Kittens that often have black nose may be caused by secretions in the nasal cavity mixed with dust in the air. It may also be caused by improper diet or nasal congestion. You need to check whether the kitten has other diseases. If the kitten is in low spirits, has increased purulent secretions from the eyes and nose, has a loss of appetite, etc., then it is a cat nasal branch, and the cat needs to be treated in time; if the kitten has no other symptoms, then there is no need to worry, just pay attention to the cat’s condition. Just diet and hygiene.