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My cat is vomiting and has black stool. What if the vet is closed?

Updated On September 23rd, 2025

Pet's info: Cat | Exotic Shorthair | Male | neutered | 7 years and 9 months old

My cat has been throwing up a lot . I waited to feed him within 24 hrs. Gave him a brat diet. Put him on regular food and after he got done eating dry food he was crying loud and he threw up his food. With yellow fluid . last week he has been throwing up a lot hair ball. And his poop it looks black with hairs in it. . Need help. The vet is closed any suggestions? Is vaseline ok to give him? For hair ball

1 Answer

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on February 3rd, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! Vomiting can be observed with conditions such as gastroenteritis, pancreatitis, dietary indiscretion, gastrointestinal foreign body ingestion and obstruction, among other possibilities. Also, black stools are usually a sign of bleeding in the stomach or small intestine which could be also due to the conditions mentioned above. For this reason, I highly recommend that you have Midnight evaluated by an emergency veterinarian that is perhaps open for further assessment and treatment as soon as possible as I am afraid he is likely becoming dehydrated. They would be able to check for these possibilities and also check his hydration status and give him medications to make him feel better. I would not recommend Vaseline for hair balls especially since the hair balls are less of a concern with the other more concerning symptoms occurring. Good luck and have a good night!

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