Is Holly Toxic to Cats?

Ilex aquifolium

Holly berries contain theobromine-like compounds and saponins. Eating them causes vomiting, diarrhoea and lethargy; the spiky leaves are a mechanical problem on top of that.

It is a garden hedge plant and a Christmas decoration, so the berries are around in December both outdoors and indoors.

Which parts are dangerous

• berries
• leaves

What to watch for in the UK

• Garden hedges and Christmas wreaths both contain it.
• Berries on wreaths drop and are within reach.
• Spines can cause mouth pain and paw injuries.
• Sweep fallen berries from floors and paths.

If your cat has already chewed it

1. Phone your vet if berries were eaten.
2. Check the mouth for spines if the cat is drooling.
3. Watch for vomiting and diarrhoea.

Take a photo of the plant, and a cutting if you can do it safely — identification is half of the vet's decision. Out of hours, use your practice's emergency number. This page explains risk; it cannot diagnose your cat and it contains no home treatments.

If your cat has vomited after eating a plant, see the cat vomiting guide and, if there is blood, vomiting blood. For a general red-flag checklist, use sick cat symptoms. If the worry is food rather than a plant, the can cats eat guide covers 36 everyday foods.

Related plants

Browse the full UK plant checklist (72 plants).