Caladium

What it does to a cat.

Yes — caladium is toxic to cats. The ASPCA lists Caladium hortulanum — also called Elephant's Ears, Angel-Wings, Heart of Jesus, and several cultivar names — as toxic to cats, dogs, and horses. The toxic principle is insoluble calcium oxalates, the same defensive chemistry that makes peace lily, pothos, philodendron, and dieffenbachia all toxic in exactly the same way.

Caladium is the painted-leaf member of the aroid family. The chemistry is identical to its plainer cousins; only the foliage pattern changes.

Why the whole aroid family is on this list

Insoluble calcium oxalate raphides are an evolutionary defence against herbivory. The Araceae family — peace lily, pothos, philodendron, monstera, dieffenbachia, anthurium, caladium — all use the same trick. Needle-shaped crystals embedded in the leaf tissue release when chewed and embed in soft tissue immediately. Cats experience oral burning within seconds, often visible drooling and pawing at the mouth within a minute or two.

Caladium is sold mainly as a houseplant for the painted foliage — white, pink, or red veins on a green ground. The leaves are heart-shaped and broad, exactly the kind of leaf a curious cat will investigate. The dose is usually self-limiting (the bitterness is intense and most cats spit), but pawing at a leaf and then licking a paw is enough to produce drooling and discomfort.

What to do if your cat ate caladium

Rinse the mouth with cool water if the cat tolerates it. Offer small amounts of food (milk-based or wet food helps carry crystals down). Most cases self-resolve within 24 hours. Call a vet if you see swelling of the mouth or throat, if vomiting persists, or if the cat refuses water for more than a few hours. ASPCA Animal Poison Control is available 24/7 at (888) 426-4435.

Cat-safe substitutes

For the same painterly, patterned foliage without the crystals, calathea is the closest visual match — bold-veined leaves in pink-and-green, ASPCA non-toxic. Prayer plant (Maranta leuconeura) covers the same understory-tropical role; Boston fern fills the same scale and indirect-light position.

For the other Araceae plants we cover, see peace lily, pothos, philodendron, and dieffenbachia. Same toxin, same picture, different leaves.