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My dog aggressively chases her tail. Is it anxiety or medical?

Updated On September 23rd, 2025

Pet's info: Dog | Chihuahua | Female | spayed | 7 years and 7 months old | 5 lbs

7 year old chihuahua will frequently chase her tail very aggressively when I walk by or approach her. Not always tho. She was adopted from shelter at age 3. Boyfriend claims she only does it when I'm home (I travel for work). Could this anxiety be resolved with medication or supplement? CBD makes her waaaay mellow. Too mellow.

1 Answer

Most Helpful Answer

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Answered By Dr. Strydom, DVM

Veterinarian

Published on August 1st, 2018

This type of behavior can be from anxiety, sure. But it is best to rule out a medical reason first. I have seen dogs do this behavior when their anal glands are full or impacted. I have seen them do this with urinary issues (like a UTI). Sometimes it is phantom pain from arthritis (in the tail). My suggestion would be to have Ruby evaluated by your vet before just assuming it is a behavioral issue. Just my opinion. If CBD makes her too mellow, and you want to try something else first, my suggestion would be to try a natural calming collar or something like D.A.P. (pheromones). If this doesn't help then talk to your vet about other options. ( # ) ( https://www.entirelypets.com/dapdogappher.html ) Best wishes!

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