Are cedar shavings toxic to hamsters?

If your hamster ate this

Contact a vet who treats small mammals now. Say it is a hamster and what it ate. Do not wait for signs.
Keep the packaging, label or a piece of the plant to show the vet.
Note what was eaten, roughly how much, and when.
If you cannot reach a vet, call a poison line that covers small mammals (below).
Do not try home treatment. Do not give food, drink or medicine unless a vet tells you to.

Your region

Animal PoisonLine (run by the Veterinary Poisons Information Service)
01202 509 000

We have not verified a poison line that covers small mammals for this region. Contact your nearest vet who treats small mammals, or an emergency vet clinic.

We have not verified a poison line that covers small mammals for this region. Contact your nearest vet who treats small mammals, or an emergency vet clinic.

Your own vet comes first. These services are run by other organisations and may charge a fee. All regions, fees and hours

Applies to: All pet hamsters (every type). Cedar wood shavings used as bedding. Some answers also cover pine.
Also called: cedar bedding, cedar wood shavings, cedar chips, pine shavings

Wood shavings are dusty and can aggravate the lungs and airways. Source: Royal Veterinary College, PDSA

Merck Veterinary Manual: Providing a Home for a Hamster (opens in a new tab)
“Avoid cedar and pine because they can be poisonous.”
Read on 10 October 2026
Royal Veterinary College: Hamster care (RVC Exotics Service) (opens in a new tab)
“Saw dust/shavings are very dusty and can aggravate their lungs and respiratory systems”
Read on 10 October 2026
PDSA: Hamsters as pets (opens in a new tab)
“Wood shavings and sawdust – very dusty and can cause breathing problems.”
Read on 10 October 2026
Merck Veterinary Manual: Providing a Home for a Hamster (opens in a new tab)
“Paper bedding and shredded paper are good choices.”
Read on 10 October 2026