Is Azalea and Rhododendron Toxic to Cats and Dogs?

Q: Is azalea and rhododendron toxic to cats?

Toxic to cats. Azaleas and rhododendrons are toxic to dogs and cats. Small nibbles usually cause mild stomach upset, but large amounts can cause irregular heartbeats and seizures.

Q: Is azalea and rhododendron toxic to dogs?

Toxic to dogs. Azaleas and rhododendrons are toxic to dogs and cats. Small nibbles usually cause mild stomach upset, but large amounts can cause irregular heartbeats and seizures.

Rhododendron

Cats

🟠 Toxic

Dogs

🟠 Toxic

Short answer: Azaleas and rhododendrons are toxic to dogs and cats. Small nibbles usually cause mild stomach upset, but large amounts can cause irregular heartbeats and seizures.

Think your pet ate azalea and rhododendron? call your vet or the ASPCA Animal Poison Control Center at (888) 426-4435.

Signs to watch for

Mild stomach upset with small amounts
Irregular heartbeat and seizures with large amounts

Why it’s a problem

Toxic principle: Not specified in our source.

The ASPCA includes azaleas in its top 10 toxic plants and says effects depend on the amount eaten.

Frequently asked questions

Is a small azalea leaf dangerous?

Small ingestions in small animals typically cause only mild stomach upset, the ASPCA says. Call your vet if your pet ate more or shows heart or neurological signs.

Other plants

Sources

ASPCA: Top 10 Toxic Plants for Pets

Last checked: 2026-11-11. General information, not veterinary advice.