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I saw one flea on my dog. Is it possible, and what should I do?

Updated on September 23rd, 2025

Pet's info: Dog | Shih Tzu | Male | neutered | 1 year and 8 months old

Jake went to the vets yesterday and there was a dog with fleas... & today I’m sure I saw an adult flea jump off him?! I have checked Jake all over and can’t see anymore on him... is it possible to just have one?

1 Answer

Most Helpful Answer

Angel Alvarado, LVT

Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on November 23rd, 2017

One flea is possible but not likely. The majority of a flea population lives off of the pet and in the surrounding environment.
To be safe and to prevent an infestation, use a topical or oral flea preventative for at least the next three consecutive months, preferably year round. Your veterinarian can dispense CapStar, which will kill any adult fleas on Jake within 30 minutes of administration, if necessary. Vacuum everywhere and dispose of the bag or empty the canister outdoors immediately after. Wash all bedding in hot water. Use an area treatment, such as Knockout ES, to prevent infestation.
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