Hedera helix
Short answer: English ivy is toxic to dogs and cats. Its saponins can cause vomiting, drooling, abdominal pain and diarrhea. The leaves are more toxic than the berries.
Toxic principle: Triterpenoid saponins (hederagenin).
Also sold as branching, glacier, needlepoint, sweetheart or California ivy. The ASPCA notes the foliage is more toxic than the berries.
The ASPCA lists vomiting, abdominal pain, drooling and diarrhea as the signs. Call your vet if your cat ate it, especially if signs are more than mild.
Last checked: 2026-11-11. General information, not veterinary advice.