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Dr. Gary
Dr. Gary, Dog Veterinarian
Category: Dog Veterinary
Satisfied Customers: 19392
Experience:  DVM, Emergency Veterinarian, BS (Physiology)
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What is causing my dog to have pencil thin poop

Customer Question

What is causing my dog to have pencil thin poop?
Submitted: 6 years ago.
Category: Dog Veterinary
Expert:  Dr. Gary replied 6 years ago.

One of the big causes of this is a rectal mass. I would have your vet do a good rectal exam to see if there is a mass causing the narrowing of the colon/ rectum and pencil thin stool.

If he's intact, then an enlarged prostate may lead to this. Neutering is often curative.

Enlarged anal glands can also potentially lead to this- something else to have checked on rectal exam.

I hope this helps, let me know if you have any other questions.