Pet safety answer · Cited to ASPCA
Is Swiss Cheese Plant safe for cats?
Why it's toxic
Toxic principles: Insoluble calcium oxalates
Clinical signs in cats: Oral irritation, intense burning and irritation of mouth, tongue and lips, excessive drooling, vomiting, difficulty swallowing.
Severity rating: moderate
Source
Classification per the ASPCA Toxic and Non-Toxic Plants database entry for Swiss Cheese Plant. Verified 2026-05-28. We update these answers when the source changes the classification.