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My dog keeps vomiting slimy mucus. What's wrong with her?

Updated on September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | spayed | 1 year and 6 months old | 31 lbs

2.5 year old lab mix started puffing of cheeks and vomiting 3 weeks ago. Foamy with some food then changed to food vomit now is slimy mucous with food. Vet did X-ray ( clear), heart worms ( clear). Placed on anitibiotics, cough medicine ,gave in office IM antibiotic and SQ fluids. Not resolved. Back to vet 5 days later. Said was maybe respiratory, gave new antibiotic and cough medicine. Dog still vomiting large amounts of slimy vomit. Food was changed by vet too. Dog hungry, poop/pee, energy ok

1 Answer

Most Helpful Answer

Jessica Keay, DVM

Answered By Jessica Keay, DVM

Veterinarian

Published on February 14th, 2018

I am very sorry to hear about Sweet. It can be frustrating when we are trying to fix a problem and it doesn’t seem to be improving. It sounds like it is time to do some more advanced testing on Sweet. This may include imaging such as ultrasound of the abdomen, or a barium contrast study. More in depth bloodwork may also be needed to check for underlying endocrine disease such as Addison’s disease or problems with liver or kidney function leading to nausea. The more advanced testing will hopefully provide more guidance as to the cause of Sweet’s issues and guide treatment. Best of luck to you!
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