Is Peony Toxic to Cats and Dogs?
Yes, the peony plant is toxic to cats and dogs. According to the ASPCA, ingestion of this popular garden flower can cause several unpleasant symptoms for pets. The plant contains a compound that is responsible for its toxicity.
Ingesting the plant can make a pet quite sick. Understanding the risks helps pet owners make safe choices for their homes and gardens. If you have pets that like to chew on plants, it is best to keep peonies out of their reach.
Peony: what the ASPCA database lists
| ASPCA entry | Peony |
|---|---|
| Other common names | None listed |
| Scientific name | Paeonis officinalis |
| Family | Paeniaceae |
| Toxic to | Toxic to Dogs, Toxic to Cats, Toxic to Horses |
| Non-toxic to | None listed |
| Toxic principles | Paeonol |
| Clinical signs listed | Vomiting, diarrhea, depression |
What the ASPCA says about peonies
The American Society for the Prevention of Cruelty to Animals (ASPCA) includes the peony, or Paeonis officinalis, in its database of plants that are toxic to pets. The organization specifically lists peonies as toxic to dogs, cats, and horses. The toxic principle identified in the plant is paeonol.
If a cat or dog eats part of a peony plant, the ASPCA notes the following clinical signs may occur:
- Vomiting
- Diarrhea
- Depression
Depression in a pet can appear as lethargy, a lack of interest in play or food, or general listlessness. These symptoms are the body’s reaction to the toxic compound found in the plant.
What this means for a home with pets
Having peonies in a home or garden with pets requires careful management to prevent accidental ingestion. A curious dog or cat might chew on a fallen leaf or a cut flower in a vase. Since the plant is considered toxic, any amount consumed could potentially cause a negative reaction. The severity of the symptoms can depend on how much the animal eats.
For example, a large dog that eats a small piece of a leaf might have a milder reaction than a small cat that ingests an entire flower petal. It is always safest to assume that any consumption of a peony plant by a pet is a cause for concern. Pay close attention to your pet’s behavior if you suspect it has chewed on a peony.
Keeping cats, dogs, and this plant apart
The most effective way to prevent peony poisoning is to ensure your pets cannot access the plants. If you grow peonies in your garden, consider using pet-safe fencing or other barriers to create a plant-free zone for your animals. Supervise your pets when they are outside, especially puppies and kittens who are often more likely to explore the world with their mouths.
For peonies brought indoors as cut flowers, place vases well out of reach. A determined cat can easily jump onto tables and counters. Choose a high shelf or a room that your pets cannot enter. When cleaning up, be sure to dispose of any fallen leaves or petals immediately so a curious pet does not find them on the floor. Always read labels on any new plants you bring into your home to check for pet safety information.
When to call your vet
If your pet chewed or ate part of this plant, call your veterinarian or an animal poison control line. Note which plant and which part, how much may be gone and when, and take a photo or a piece of the plant with you.
If you see your cat or dog eat any part of a peony plant, or if your pet shows signs like vomiting, diarrhea, or unusual lethargy, contact your veterinarian or a pet poison hotline right away. Be prepared to tell them what your pet ate, how much you think it consumed, and when it happened. Keep the plant or its packaging for identification if possible.
Emergency signs: go now
- Collapse, fainting or severe weakness
- Seizures, tremors or trouble standing
- Trouble breathing or blue, gray or very pale gums
- Repeated vomiting or retching, or a swollen, painful belly
- Any known contact with a substance listed as toxic, even before signs appear
Book an appointment soon
- Vomiting or diarrhea that lasts or keeps coming back
- Not eating or drinking, or drinking much more than usual
- Drooling, pawing at the mouth or a swollen face
- Lethargy, hiding or acting unlike themselves
ASPCA Animal Poison Control Center: (888) 426-4435 (a consultation fee may apply). Your own vet or nearest emergency clinic is always a good first call.
Sources
Last checked October 21, 2026. Listings and guidance can change; your veterinarian knows your pet’s health history.