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My dog is losing weight, eating well, but has low energy. Why?

Updated On September 23rd, 2025

Pet's info: Dog | Goldendoodle | Female | spayed | 1 year and 5 months old | 40 lbs

My dog, Boots, is losing weight continuously but still has a very good appetite. Her energy is less than usual but she seems to be acting great otherwise. She is up to date on flea/tick/worming. What could be wrong??

1 Answer

Most Helpful Answer

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Answered By Jessica Desrosiers

Veterinary Technician

Published on November 11th, 2019

It would be hard to say without an exam. My first guess would be to parasites, but if she's been dewormed recently, that may be ruled out. It wouldn't hurt to have another fecal exam done just in case, as well as bloodwork to check for any health issues such as metabolic problems, illnesses, ingredient allergies, etc that may be causing the weight loss. Your vet can also perform a body condition score along with tracking Boots' weight to see if she is too skinny, or still at the correct size for her body type.

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