Darkness on your cat's chin can be due to many reasons, some of which may be natural, while others may be due to health issues. Some natural causes may include: Age: As cats age, their skin may become darker.
This is usually caused by an increase in pigment on the skin. Breed: Some cat breeds have naturally darker skin, such as Abyssinians. Season: Some cats' skin becomes darker in the winter, because the sunlight in winter is weaker and the pigment on the skin is easier to produce. Possible causes of health problems include: Skin conditions: Skin conditions may cause darkening or discoloration of the skin. Allergies: Allergies may cause redness or darkening of the skin. Skin injury: Skin injury or infection may cause darkening of the skin. If your cat has a black chin and you are concerned about it, it is recommended that you consult your veterinarian to determine the specific cause and appropriate treatment.