The black cinder-like color on the cat’s mouth is because the cat food the cat usually eats contains too much fat. It just contains too much fat. These are oil particles secreted by cats.

Measures to solve the black cinders on the cat’s mouth:

At this time, the owner can change the cat’s cat food to low-fat cat food, and then if the cat Drinking water from plastic bowls for a long time can also easily lead to bacterial infection around the cat's mouth, resulting in the appearance of something similar to black cinders.