PET SAFETY ANSWER · CITED TO ASPCA
Is Croton safe for cats?
Why it's toxic
Toxic principles: Diterpene esters
Clinical signs in cats: TOXIC ONLY IF LARGE QUANTITIES EATEN. SKIN IRRITATION MINOR OR LASTING ONLY FOR A FEW MINUTES. Allergic dermatitis with skin rash developing after repeated contact. Nausea, vomiting, diarrhea when ingested.
Severity rating: mild
Source
Classification per the ASPCA Toxic and Non-Toxic Plants database. Verified 2026-05-28. We update these answers when ASPCA changes the classification.