This kind of black condensation may be caused by cat folliculitis. Parents can control their diet and feed some light food. If the black condensation still exists, it may be caused by the cat's stress. Parents should not pay too much attention to the cat. Just relax and feed as usual. Maybe it will get better on its own in a few days.

Tips:

Cats will always have various unexplained illnesses. Sometimes they will get better on their own if you don’t care. As long as the cat has no other problems, parents won’t do it. Care too much about these.