Can Russian Tortoises eat Rhubarb?
Rheum × hybridum
Safety verdict
Toxic
Why
Leaves contain extremely high concentrations of oxalic acid — sufficient to cause acute kidney failure and death. Stalks also contain elevated oxalate. Do not feed any part of the plant.
Sources
The Tortoise TableThe Tortoise Table ↗
Rheum sp. — toxic. Contains very high levels of oxalic acid, particularly in the leaves. Potentially fatal.
Cross-referenceASPCA Animal Poison Control — Rhubarb (Rheum spp.) ↗
Contains oxalic acid and anthraquinone glycosides. Toxic — kidney damage.
Not veterinary advice. This information is for educational purposes. Always consult a qualified exotic animal veterinarian for guidance specific to your pet.