---
title: "Can dogs and cats eat xylitol and birch sugar?"
description: "Xylitol and birch sugar and pets: toxic — treat as an emergency. What it does, whether the dose matters, and how dogs, cats, rabbits and birds differ."
url: https://atoneplace.net/can-pets-eat/xylitol/
site: "At One Place"
---

# Can pets eat xylitol and birch sugar?

**Xylitol and birch sugar: Toxic — treat as an emergency**

Dogs: Toxic · Cats: Risky

> If this has already been eaten, ring your vet or an animal poison control line now rather than waiting for signs to appear — for several of these the window in which treatment works closes before the animal looks unwell. Do not try to make the animal sick at home: home emetics are dangerous for corrosive and petroleum substances and for an animal already showing signs, and salt-based ones have themselves proved fatal.

## By animal

| Animal | Verdict | Why |
| --- | --- | --- |
| Dogs | Toxic | Triggers a massive insulin release, then hypoglycaemia, and at higher doses liver failure. |
| Cats | Risky | Cats appear far less sensitive, but there is little data and no reason to test it. |

## What it actually does

In a dog, xylitol is mistaken for glucose by the pancreas and provokes an insulin release several times larger than actual sugar would. Blood glucose crashes within 10 to 60 minutes, producing weakness, staggering and seizures. At higher doses it causes acute liver necrosis, which can appear a day or more later in a dog that seemed to recover. It is in sugar-free gum, mints, some peanut butters, protein bars, toothpaste, some medications and increasingly in "no added sugar" baking products, often labelled as birch sugar or E967.

## How much matters

Around 0.1 g/kg is enough to cause hypoglycaemia and 0.5 g/kg to threaten the liver. A single piece of sugar-free gum can contain 0.3 g or more, so two pieces are a real dose for a small dog.

## The bit that is usually got wrong

> Check the peanut butter jar before using it for medication or a lick mat. Xylitol-sweetened peanut butter exists and is the single most common route of accidental poisoning.

> Body weight decides almost everything here, so what is trivial for a 40 kg dog can matter for a 4 kg one, and a bird is smaller again. Where a real published threshold exists this page gives it; where none does, it says so rather than inventing one.

## Sweets and baking

| Food | Worst verdict | Dogs | Cats |
| --- | --- | --- | --- |
| Chocolate | Toxic | Toxic | Toxic |
| Chewing gum | Toxic | Toxic | Risky |
| Ice cream | Risky | Risky | Risky |
| Honey | Risky | In moderation | In moderation |
| Nutmeg | Not safe | Not safe | Not safe |
| Cinnamon | Risky | In moderation | Risky |

## Common questions

### Can dogs eat xylitol and birch sugar?

Toxic — treat as an emergency. Triggers a massive insulin release, then hypoglycaemia, and at higher doses liver failure.

### Can cats eat xylitol and birch sugar?

Risky — depends on amount or preparation. Cats appear far less sensitive, but there is little data and no reason to test it.

### What does xylitol and birch sugar actually do?

In a dog, xylitol is mistaken for glucose by the pancreas and provokes an insulin release several times larger than actual sugar would. Blood glucose crashes within 10 to 60 minutes, producing weakness, staggering and seizures. At higher doses it causes acute liver necrosis, which can appear a day or more later in a dog that seemed to recover. It is in sugar-free gum, mints, some peanut butters, protein bars, toothpaste, some medications and increasingly in "no added sugar" baking products, often labelled as birch sugar or E967.

### How much is dangerous?

Around 0.1 g/kg is enough to cause hypoglycaemia and 0.5 g/kg to threaten the liver. A single piece of sugar-free gum can contain 0.3 g or more, so two pieces are a real dose for a small dog.

### What should I do if my pet has eaten it?

Call your vet or an animal poison control line now, rather than waiting for signs. Do not try to make the animal sick at home.

## Related pages

- [Can pets eat chocolate?](https://atoneplace.net/can-pets-eat/chocolate/)
- [Can pets eat chewing gum?](https://atoneplace.net/can-pets-eat/chewing-gum/)
- [Can pets eat ice cream?](https://atoneplace.net/can-pets-eat/ice-cream/)
- [Can pets eat honey?](https://atoneplace.net/can-pets-eat/honey/)
- [Can pets eat nutmeg?](https://atoneplace.net/can-pets-eat/nutmeg/)
- [Can pets eat cinnamon?](https://atoneplace.net/can-pets-eat/cinnamon/)
- [Can pets eat chocolate?](https://atoneplace.net/can-pets-eat/chocolate/)
- [Can pets eat grapes, raisins, sultanas and currants?](https://atoneplace.net/can-pets-eat/grapes/)
- [Can pets eat onion, garlic, leek and chives?](https://atoneplace.net/can-pets-eat/onion-garlic/)
- [Can pets eat cooked bones?](https://atoneplace.net/can-pets-eat/cooked-bones/)
- [Everything, for dogs](https://atoneplace.net/can-pets-eat/dog/)
- [Everything, for cats](https://atoneplace.net/can-pets-eat/cat/)

## Sources

- MSD/Merck Veterinary Manual — Merck & Co. (https://www.merckvetmanual.com/)