Can Leopard Tortoises eat Philodendron?

Why

[confidence: high] [source: The Tortoise Table plant database, ASPCA toxic plant list cross-referenced with chelonian husbandry guidelines, and exotic reptile veterinary toxicology review.] Philodendron species contain insoluble calcium oxalate crystals (raphides) that cause oral irritation, swelling, and gastrointestinal distress; ingestion by leopard tortoises can lead to hypersalivation, dysphagia, and mucosal damage. There is no safe threshold for consumption in herbivorous tortoises given the direct tissue toxicity mechanism.