Is Rhubarb Leaf Toxic to Dogs?

Rhubarb is a common garden vegetable, and there's an important distinction between its parts: the stalks, which people cook and eat, are generally fine for dogs in small amounts, but the leaves contain a concentrated amount of oxalic acid, which binds calcium in the body and can affect the kidneys and nervous system if eaten in enough quantity.

Dogs with access to a home garden are the most common exposure case, usually from chewing on discarded leaves after harvest rather than seeking the plant out specifically.

Symptoms to watch for: drooling, vomiting, tremors, and in significant ingestions, weakness or changes in heart rhythm from the calcium-binding effect.

What to do right now: if your dog has garden access, removing rhubarb leaf trimmings promptly rather than leaving them in a compost pile within reach is a simple preventive step. For any known ingestion of leaf material specifically, get an assessment based on the amount involved.

When it's an emergency: any tremors or weakness following ingestion of rhubarb leaves specifically (not the stalks).

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This is general information, not a substitute for an actual assessment of your specific pet, weight, and situation. If you're ever unsure whether something your pet ate needs immediate attention, a quick video vet consultation can tell you in minutes whether to monitor at home or head to a clinic.