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Why is my 2-month-old puppy scratching and losing hair on his back?

Updated On September 23rd, 2025

Pet's info: Dog | Beagle | Male | 1 month and 28 days old | 3 lbs

Hi! Lupito is just 2 months old and he has never been outside the house because he is not yet vaccinated. I noticed that some parts of his back does not have hair, he is loosing a hair and he is scratching too. What can it be?

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1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on September 8th, 2019

It could be fleas. Fleas can be brought in on your clothes or by other animals in the house. First, I would give him Capstar. It's a one time pill that starts killing fleas within 30 minutes. Then follow up with a spot on treatment, such as Advantage or Revolution. This is a treatment that has to be used once a month. You will also have to disinfect the environment. Wash his bedding in hot soapy water, and vacuum the furniture and carpet surfaces. You can use a spray to kill fleas in the house, such as Indorex, or a flea bomb would work well to kill the fleas in the home. Best of luck.

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