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Were certain animals more likely to have adverse events from spot-on flea and tick products? If so, why are they more likely to have a problem?

April 26, 2017adverse animals certain events flea likely problem products tick

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Were certain animals more likely to have adverse events from spot-on flea and tick products? If so, why are they more likely to have a problem?

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The EPA found that young dogs (less than 3 years old) and small-breed dogs (weighing 10-20 pounds) tended to be the most commonly reported for all products. Small breeds were over-represented especially with cyphenothrin- and permethrin-containing products. Chihuahuas, Shih Tzus, Miniature Poodles, Pomeranians, and Bichon Frises appeared to be generally over-represented across the spot-on products (as compared with their respective American Kennel Club popularity rankings).