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Updated on September 23rd, 2025
Pet's info: Dog | Labrador Retriever | Female | spayed | 11 years and 7 months old | 65 lbs
My dog is an 11 year old Chocolate Lab. She has arthritis and has trouble walking, but she's not in any pain. In the past few days I've noticed that her belly is very swollen and distended. She doesn't act like she's in pain, she still has her appetite and other than her arthritis she seems totally healthy, what could this be?
2 Answers

Answered By Lauren Jones VMD
Veterinarian
Published on June 20th, 2017
Answered By Jennifer Summerfield, DVM CPDT-KA
Veterinarian, Certified Dog Trainer
Published on October 26th, 2019
Oh dear! This sounds very concerning. Without being able to examine Milo in person and do some testing, I can't say for sure what's going on. But, a swollen belly that happens in a relatively short period of time is often due to some kind of fluid accumulation in the abdominal cavity, which could be the result of heart disease, liver disease, internal bleeding, or some type of cancer.
This is always a concerning symptom, and may represent a life-threatening problem - so I would recommend taking Milo to an emergency clinic right away to be seen. The veterinarian there can do blood work, x-rays, or other testing if needed to help diagnose the problem and see what kind of treatment is necessary.
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