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My senior chihuahua mix is shaking, not eating, and throwing up. Why?

Updated On September 23rd, 2025

Pet's info: Dog | Chihuahua | Female | spayed | 10 lbs

We just got my senior chihuahua mix about a month ago. She was extremely over weight. Now she isnt eating and shakes alot when before she didn't. I put a seresto collar on her about a week ago. She has also been puking a lil here and there when she eats a little (like treats). I'm just worried something is wrong. Also she had a mass removed from the back of her neck right before we adopted her.

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1 Answer

Most Helpful Answer

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Answered By Sara Farmer, DVM

Veterinarian

Published on April 26th, 2020

I would worry that the shaking could be a sign of pain - sometimes neck, back or abdominal pain can cause symptoms like this. Shaking can also be a sign of a fever. I’d recommend seeing your veterinarian for an exam. I doubt the Seresto collar is related.

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