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Why is my cat chewing his tail? Is it normal or an allergy issue?

Updated on September 23rd, 2025

Pet's info: Cat | American Shorthair | Male | neutered | 8 months and 14 days old

My cat midnight is about 7 to 8 months and he has been chewing on his tail for about 4 months. He would rather chew his tail over his toys. We tried string toys and squirting him with water. We tried distracting him with other toys and treats and he still does it. We have resorted to a cone so he will stop. He does it all day and all night where husband thinks the fur on the tip of his tail is a different color then the rest of him. What else can we do? He is healthy. So is this normal?

1 Answer

Most Helpful Answer

Ricardo Fernandez, DVM

Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on January 15th, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! This is possibly due to allergies as opposed to being behavioral. This is possibly more specifically due to flea allergies. It really comes down to figuring out what is causing his allergies so that they can be treated or the specific allergen avoided.

There are many things that can cause allergies though in most cases they can be broken down into 3 big categories: flea, food and environmental allergies.

Allergies are usually worked up in a stepwise fashion starting with flea allergies as this is the easiest and cheapest to take care of. If not on a flea preventative, then it would be a good idea to get started on one. If already on one then it would be a good idea to change to something else (there are many new products out in the market).

If not improved in 1-3 months then it is time to move on and check for food allergies by switching to a novel diet (new protein and new carbohydrate). If that does not seem to be the issue then you are left out having to check for environmental allergies which require blood and/or skin tests.

Allergies can be very frustrating to deal with at first but so rewarding at the end when we are able to treat them effectively!
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