Can Russian Tortoises eat Pothos?

Why

[confidence: high] [source: The Tortoise Table plant database (tortoisetable.org.uk), ASPCA Toxic Plant List, and exotic reptile veterinarian review] Pothos (Epipremnum aureum) contains insoluble calcium oxalate crystals that cause intense oral irritation, excessive salivation, and swelling of oral tissues; ingestion by Russian Tortoises can lead to gastrointestinal distress and, in larger quantities, systemic effects. This plant is consistently listed as toxic to herbivorous reptiles due to this well-documented oxalate mechanism.