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Dr. Scott
Dr. Scott, Veterinarian
Category: Dog Veterinary
Satisfied Customers: 15168
Experience:  15 years of small animal, equine and pocket pet medicine and surgery.
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My Dogs Anus Is turning black. Should I be worried about

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My Dog's Anus Is turning black. Should I be worried about this. There are no symptoms.
Hello there,

Is the area itchy or swollen?
Customer: replied 7 years ago.
Itchy - Not that I know of.

Swollen - the anus appears like flat, just a different color.
Pigment change is not uncommon as dogs get older. If the anus is not swollen I would not be too concerned. It can be caused by a low thyroid level. If the dog starts getting unexplained weight gain and a poor hair coat, I would have the thyroid checked. It is a very common problem in middle aged to older dogs.
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