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Why is my 3-month-old puppy sick, losing weight, and has many ticks?

Updated On September 23rd, 2025

My dog is three months old and she is becoming sick...and I didnt start her deworming yet I found so many ticks in her body.....she is losing her weight

1 Answer

Most Helpful Answer

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Answered By Linda G, MS, DVM

Veterinarian

Published on November 24th, 2019

Hello. There are just so many possibilities here that the best advice I can give would be to have her evaluated as soon as possible. A puppy should start a deworming program at 2 weeks of age. By 3 months she could have a massive number of intestinal parasites. Ticks can carry multiple diseases as well as cause anemia from blood loss, & I will just assume you have not started any vaccinations, yet. Puppies should be vaccinated starting at 7-8 weeks of age. To try & sort out what is making her so unwell, she needs a thorough evaluation soon. I hope you can do this for her & thanks for using Petco Pet Education Center, formerly Petcoach.

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