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Why is my 15-month-old chihuahua acting weird? Is it her first heat?

Updated On September 23rd, 2025

Pet's info: Dog | Chihuahua | Male | unneutered | 5 months and 22 days old

On Friday my 15 month old chihuahua started to act weird and she is still not herself the now , I don’t think she has been on the break yet so could this be her first ?

1 Answer

Most Helpful Answer

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Answered By Daniel Fonza, DVM

Veterinarian

Published on June 24th, 2018

Hi there and thank you for using Petco Pet Education Center, formerly Petcoach to address your concern. If she has not had her first heat cycle then this could certainly be the cause of what you are seeing. If these signs do not resolve after 2-3 weeks, then I would recommend having a veterinarian take a look at Belle so that the most appropriate diagnostic and treatment recommendations can be made. Please let me know if you have any other questions or concerns and I would be more than happy to help you further.

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