Is Dog flea medicine on cats Toxic to Pets?
Yes — dog flea medicine on cats is toxic to cats. No — dog flea medicine on cats is non-toxic to dogs.
PawSafe Check is for general information only and is not veterinary advice. Always contact your veterinarian or a poison control service if you think your pet has been exposed.
- Toxic compound
- Permethrin
- Toxic parts
- Spot-on products
Symptoms
Cats (toxic)
- Tremors
- Twitching
- Seizures
- Drooling
Dogs (non-toxic)
- Tremors
- Twitching
- Seizures
- Drooling
What to do
If your cat ate dog flea medicine on cats
- Call your vet or a pet poison control line immediately — don't wait for symptoms.
- Do not induce vomiting unless a vet tells you to.
- Bring the plant, label or packaging with you so the vet knows exactly what your cat ate.
- Note roughly how much was eaten and when.
If your dog ate dog flea medicine on cats
- This is generally considered safe for dogs.
- Large amounts of any plant or unfamiliar food can still cause stomach upset.
- Call your vet if your dog seems unwell.
Good to know
Many dog spot-on flea products contain high-concentration permethrin, which causes tremors and seizures in cats. Never use dog products on cats.
Is your pet covered for emergency vet bills?
Compare pet insurance quotes →
Frequently asked questions
Is dog flea medicine on cats toxic to cats?
Yes — dog flea medicine on cats is toxic to cats. Common signs include tremors, twitching, seizures.
Is dog flea medicine on cats toxic to dogs?
No — dog flea medicine on cats is non-toxic to dogs. Common signs include tremors, twitching, seizures.
Which parts of dog flea medicine on cats are toxic?
Spot-on products.
What makes dog flea medicine on cats toxic?
Permethrin.
Related guides
Related items
Free printable: 25 pet-safe houseplants + emergency numbers
We only use your email to send the list and occasional pet-safety tips. Unsubscribe anytime. Privacy policy