Is Honeysuckle Toxic to Cats?
Also known as: Woodbine, Japanese Honeysuckle, Lonicera · Lonicera japonica
What makes it toxic
Saponins and cyanogenic glycosides in some Lonicera species, concentrated in berries. They irritate the gut and, at high doses, can affect cellular oxygen use.
Warning signs to watch for
Drooling, vomiting, diarrhea and lethargy within a few hours. Significant berry consumption can cause weakness and tremors.
What to do if your cat eats it
Remove access, offer water and monitor closely. Call your vet if vomiting continues or the cat seems weak; berry-heavy ingestion deserves a same-day call.
Common questions
Is honeysuckle the same as the cat-attractant woodbine spray?
No — the honeysuckle cat toys are usually Tartarian honeysuckle wood, which has a mild catnip-like effect. The live plant itself is mildly toxic when eaten.
Are the berries the dangerous part?
Yes, they carry the highest glycoside load. A cat playing under a vine rarely eats many, but trimming berries reduces risk.
Is the flower nectar safe if a cat licks it?
A tiny taste of nectar is not a concern. The leaves and berries are what to keep away.
More plants checked for cats
This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate something concerning, contact your veterinarian or a pet poison hotline right away. Checking what your pet can eat? Visit our sister site SafeOrToxic.