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Why does my French Bulldog have black stools and blood in semen?

Updated On September 23rd, 2025

Pet's info: Dog | French Bulldog | Male | unneutered | 1 year and 9 months old | 23 lbs

I have a french bulldog,2 years old, recently he has developed a stomach infection due to which he had been throwing up a mix of blood and froth. The day before we took him to the vet he threw up around 10 times. After diagnosis, the vet prescribed some anitibiotics, after giving him those the vomiting is in control. However after coming back home from the vet visit, the next morning he started passing liquid stools that were black in colour, also while passing semen there were big drops of bloo

1 Answer

Most Helpful Answer

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Answered By Dr. Strydom, DVM

Veterinarian

Published on March 27th, 2018

Hello, thank you for using Petco Pet Education Center, formerly Petcoach. So sorry that Yoda is having these problems. It sounds like he may a couple different things going on. 1. Black, liquid stools are called melena and are not a good sign. This occurs due to the presence of digested blood in the feces. This is considered a medical emergency. He may be having an issue with his blood clotting. He may have a bleeding stomach ulcer. Do you think it is possible that he got into some type of toxin/poison? Many poisons will cause internal bleeding. Toxicity could explain the vomiting blood/froth and the black stools. 2. Passing semen with blood could indicate that there is problem with his prostate or it may indicate he is having a problem with his blood clotting (as above). I think you really need to take Yoda back to your vet to get more of a work up. Was any blood testing done? X-rays? I am glad the vomiting is under control I but I worry about the other symptoms you mentioned. Please understand it is difficult to comment with limited information. Just based on your description I would be worried and I would get him back to the vet. Hope this helps. Best wishes and I hope Yoda is back to normal soon.

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