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Dog getting worse after spay: lethargic, not eating. What's wrong?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Female | unspayed | 6 months and 11 days old | 15 lbs

My six month old Bernedoodle Molly got spade 5-6 days ago. The first day and a half she was very sleepy and lethargic (expected) and the 2nd and 3rd day she was more or less back to 80% of her energetic self. Days 4 and 5 it is almost like she is depressed. Her appetite has diminished, she sleeps all day, and is very slow moving when walking or trying to sit/lay down. We are worried because day two and three she had very high energy and now it seems like she is getting worse. Thoughts?

1 Answer

Most Helpful Answer

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Answered By Ann Dion, DVM

Veterinarian

Published on December 2nd, 2018

Hello and welcome to Petco Pet Education Center, formerly Petcoach. If she was bright and happy, and is now lethargic again, one concern is an infection within the abdomen. This is rare after a spay but can happen as a potential complication of any abdominal surgery. I recommend you have Molly back to your vet ASAP, or to an emergency clinic if your vet is closed. They will check her abdomen with an ultrasound to see if any free fluid is present, and will test this fluid if present. They might also do a blood test to look at her white and red blood cell levels. It might just be that Molly needs more pain medications, however we must rule out a 'peritonitis' (infection in the abdominal cavity) first. Best of luck with Molly, I hope she feels better soon!

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