Is Hydrogen peroxide Toxic to Pets?
Yes — hydrogen peroxide is toxic to cats. Yes — hydrogen peroxide is mildly 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
- Hydrogen peroxide
- Toxic parts
- 3% and stronger solutions
Symptoms
Cats (toxic)
- Vomiting
- Drooling
- Stomach irritation
Dogs (mildly toxic)
- Vomiting
- Drooling
- Stomach irritation
What to do
If your cat ate hydrogen peroxide
- 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 hydrogen peroxide
- Remove any plant material from your dog's mouth and keep it out of reach.
- Gently rinse the mouth and offer fresh water.
- Call your vet if symptoms persist, get worse, or your dog is small, young or elderly.
Good to know
Vets sometimes use 3% peroxide to make dogs vomit, but only under direct instruction. It is not safe for cats, can cause stomach ulcers, and stronger concentrations burn.
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Frequently asked questions
Is hydrogen peroxide toxic to cats?
Yes — hydrogen peroxide is toxic to cats. Common signs include vomiting, drooling, stomach irritation.
Is hydrogen peroxide toxic to dogs?
Yes — hydrogen peroxide is mildly toxic to dogs. Common signs include vomiting, drooling, stomach irritation.
Which parts of hydrogen peroxide are toxic?
3% and stronger solutions.
What makes hydrogen peroxide toxic?
Hydrogen peroxide.
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