Pet safety
Is Holm Oaktoxic to cats & dogs?
Quercus ilex
Quick verdict — at a glance
- Toxic to cats?
- Yes — toxic
- Toxic to dogs?
- Yes — toxic
- ASPCA classification
- Toxic to pets · botanical name Quercus ilex
Is holm oak safe for cats and dogs?
No — holm oak is toxic to cats and dogs. Keep it well away from any pet that chews plants; reactions can be significant. This classification follows the ASPCA Toxic and Non-Toxic Plant List, the most widely used reference for companion-animal plant safety in the US and the standard most UK vets cite as well. ASPCA lists oak (Quercus species) as toxic to dogs, cats and horses. Acorns, buds and young leaves contain tannins (gallotannins/tannic acid); ingestion causes vomiting, diarrhoea, abdominal pain and, with large amounts, kidney or liver injury. Holm oak acorns are lower in tannin than many oaks but still warrant caution around pets.
| Pet | Toxic? | Per ASPCA |
|---|---|---|
| Cats | Yes | Toxic to pets |
| Dogs | Yes | Toxic to pets |
What happens if a pet eats holm oak?
ASPCA lists oak (Quercus species) as toxic to dogs, cats and horses. Acorns, buds and young leaves contain tannins (gallotannins/tannic acid); ingestion causes vomiting, diarrhoea, abdominal pain and, with large amounts, kidney or liver injury. Holm oak acorns are lower in tannin than many oaks but still warrant caution around pets. Signs usually appear soon after chewing rather than hours later. If you see drooling, pawing at the mouth, head-shaking, vomiting, loss of appetite, or unusual lethargy after your pet has had access to holm oak, treat it as a suspected ingestion and act on the steps below.
What to do if your pet ate holm oak
- Remove any plant material from your pet's mouth and move holm oak out of reach.
- Note how much was eaten and when, and watch for drooling, vomiting, or lethargy.
- Do not induce vomiting unless a vet or poison-control specialist instructs you to.
- Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice.
- Bring a leaf or photo of holm oak to the appointment so it can be treated correctly.
This page is general guidance, not veterinary advice. Pets vary, and a reaction may be to soil, fertiliser, or pesticide rather than the plant. If you are worried, always contact a vet or the ASPCA Animal Poison Control Center on (888) 426-4435 — do not wait for symptoms to worsen.
Pet-safe alternatives to holm oak
Want the same look without the risk? These plants are listed as non-toxic to cats and dogs by the ASPCA and have similar care needs:
- Cucumber — non-toxic to cats and dogs (care guide)
- Lettuce — non-toxic to cats and dogs (care guide)
- Bean — non-toxic to cats and dogs (care guide)
- Pea — non-toxic to cats and dogs (care guide)
Holm Oak and pets — frequently asked questions
Is holm oak toxic to cats?
Holm Oak (Quercus ilex) is toxic to cats according to the ASPCA. ASPCA lists oak (Quercus species) as toxic to dogs, cats and horses. Acorns, buds and young leaves contain tannins (gallotannins/tannic acid); ingestion causes vomiting, diarrhoea, abdominal pain and, with large amounts, kidney or liver injury. Holm oak acorns are lower in tannin than many oaks but still warrant caution around pets. Keep it out of reach and contact your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 if your cat chews it.
Is holm oak toxic to dogs?
Per the ASPCA, Holm Oak (Quercus ilex) is toxic to dogs. Dogs often chew more enthusiastically than cats, so a toxic plant like holm oak is best removed from the floor and low shelves entirely.
What happens if my pet eats holm oak?
ASPCA lists oak (Quercus species) as toxic to dogs, cats and horses. Acorns, buds and young leaves contain tannins (gallotannins/tannic acid); ingestion causes vomiting, diarrhoea, abdominal pain and, with large amounts, kidney or liver injury. Holm oak acorns are lower in tannin than many oaks but still warrant caution around pets. Signs usually appear soon after chewing rather than hours later. If you see drooling, pawing at the mouth, head-shaking, vomiting, loss of appetite, or unusual lethargy after your pet has had access to holm oak, treat it as a suspected ingestion and act on the steps below.
What should I do if my cat or dog ate holm oak?
Stay calm. Remove any remaining plant material from your pet's mouth and take the plant away so they cannot eat more. Note roughly how much was eaten and when. Do not make your pet vomit unless a vet or poison-control specialist tells you to. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 (a consultation fee may apply) and follow their advice. Bringing a photo or a leaf of holm oak to the appointment helps the vet treat it correctly.
What are pet-safe alternatives to holm oak?
If you want a similar look without the risk, good non-toxic swaps include cucumber, lettuce, bean, pea. All of these are listed as non-toxic to cats and dogs by the ASPCA, so they suit a home where pets have access to your plants.
Full holm oak care
Pet-safety is one piece of the picture. For light, watering, soil, and troubleshooting, see the complete holm oak care guide, or browse the full pet-safe plant library to check another plant before you buy it.