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Why is my dog's poop dark and hard? Is it blood or constipation?

Updated On September 23rd, 2025

Pet's info: Dog | Yorkshire Terrier | Male | neutered | 6 months and 12 days old | 3.4 lbs

Moki recently has very dark color hard poop. I can't tell if it is dark brown or black. I'm concerned if he is popping blood. It is not wet & shiny like wet tar. Sometimes it is dark brown & sometimes darker. Do poop darken over time if not picked up? I search online some say it have to be tarry to be blood. I did a fecal testing before no parasites. i did it in Petco should I redo it at another place? His energy level seem the same but he is sleeping earlier. I'm trying to give him more water.

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on January 3rd, 2017

It could be that Moki is constipated, and that's why his poop is dark and hard. I would try adding a tablespoon of canned pumpkin puree (not pumpkin pie filling) in with his food to see if that helps. You can also give him a little more exercise, as that can help with constipation. I would take his feces into the vet to have it checked to make sure there is no blood or parasites in it.

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