Is Peace Lily Safe for Dogs and Cats?

Peace Lilies (*Spathiphyllum* spp.) are moderately toxic to cats and dogs. It is important to note that the Peace Lily is not a 'true' lily (family Liliaceae) and does not cause the fatal kidney failure associated with Lilium species. Instead, the toxicity of Peace Lilies arises from the presence of insoluble calcium oxalate crystals, a characteristic shared with plants in the Araceae family. According to ASPCA toxicology data, when a pet bites into the leaves or stems, these needle-like crystals (raphides) are shot into the sensitive tissues of the mouth, tongue, and throat. This causes immediate, intense burning, oral irritation, swelling of the lips and tongue, excessive drooling, difficulty swallowing, and vomiting. While the pain usually stops pets from eating more, severe swelling can occasionally restrict breathing. If your pet has chewed a Peace Lily, wash their mouth with water or milk to help bind the crystals. Safe alternatives with similar lush white blooms include the Orchid or the non-toxic Marigold. Peace Lilies are very common in homes due to their elegant dark foliage and white sail-like flowers, but they must be positioned carefully in pet-owning households. The calcium oxalate crystals are sharp and cause immediate physical damage to the mucous membranes of the mouth upon contact. If a pet consumes a larger amount, the resulting swelling of the upper airway can become a serious medical concern. Veterinary support is focused on pain management, keeping the airway clear, and offering cold liquids to reduce oral swelling. To maintain a safe home environment, place peace lilies on high shelves or choose a pet-safe white flower like the Moth Orchid. For more information on outdoor garden hazards, see our profile on the toxic Great Blue Lobelia.