Can Dogs Eat Mint? Safe Types, Pennyroyal & Xylitol

Can Dogs Eat Mint?

LIMIT

LIMIT — A leaf or two of plain spearmint or peppermint is fine, but never pennyroyal, mint essential oil, or mint sweets and gum.

Fresh spearmint and peppermint leaves are fine in tiny amounts. Pennyroyal (a type of mint) and concentrated mint oils are toxic, and mint sweets and gum may contain xylitol.

Fresh mint leaves growing in a garden bed

Quick answer

Category: Herbs
Recommended preparation: A leaf or two of fresh spearmint or peppermint, chopped small
Main concern: Pennyroyal and mint oils are toxic; xylitol in mints and gum
Suitable as everyday food: Occasional tiny garnish

The full answer

Spearmint and peppermint leaves are generally fine for dogs in very small amounts, and a little fresh mint is sometimes used to freshen breath. Large amounts of mint can upset the stomach.

Not every mint is safe. English pennyroyal is a mint-family plant that is toxic to dogs, and concentrated essential oils such as peppermint oil can be harmful if eaten or licked. Always make sure you know which plant you are giving.

Mint sweets, breath mints and gum are a bigger worry because many sugar-free products contain xylitol, which is highly toxic to dogs. Never share these.

Is Mint Good for Dogs?

Mint is aromatic and a pinch may freshen breath, but it is not a substitute for dental care.

Potential benefits

Fresh scent in tiny amounts
Harmless garnish in small amounts

Risks and Things to Know

Pennyroyal is toxic to dogs
Mint essential oils are concentrated and can be harmful
Mints, gum and sweets may contain xylitol
Too much mint can cause vomiting or diarrhoea
Mint-flavoured human products often contain sugar or other additives

How much is okay?

One or two small leaves, finely chopped, is plenty. Mint should be an occasional extra, not a regular food.

How Should I Prepare It?

Wash fresh leaves and chop finely.
Sprinkle a small pinch over regular food.
Never use essential oils or mint sweets.

Can Puppies Eat Mint?

It is best to skip mint for puppies unless your vet says it is fine.

What If My Dog Ate Too Much?

Eating a lot of mint can cause vomiting or diarrhoea.

If your dog has eaten mint essential oil, pennyroyal, or mints or gum that may contain xylitol, contact a vet immediately.

This guide is for general educational purposes and isn't a substitute for advice from your veterinarian. If your dog has eaten something potentially toxic or is showing concerning symptoms, contact a veterinarian promptly.

Frequently Asked Questions

A leaf or two of fresh spearmint or peppermint is generally fine. Large amounts can upset the stomach.

No. Essential oils are concentrated and can be harmful if eaten or licked.

No. Many contain sugar or xylitol, which is toxic to dogs.

No. Pennyroyal is a toxic mint-family plant. Contact a vet if your dog ate some.

How this guide was written

Last updated 13 October 2026. We write from widely published, mainstream pet-health sources and avoid presenting feeding amounts as veterinary prescriptions.