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Dog flea/tick spot-on products applied to cats
cat severe
Go to the vet immediately — don't wait for symptoms.
- Hazard
- High-concentration (45-65%) permethrin spot-on products made for dogs are highly toxic to cats, which lack the enzyme needed to detoxify permethrin. Cats can also be poisoned secondhand by grooming a treated dog. Causes tremors, seizures, and hyperthermia; there is no antidote, only supportive care.
- Notes
- Low-concentration (~2%) permethrin sprays labeled for cats are not considered toxic to cats at that concentration.
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Source: ASPCA Professional; veterinary literature · view original