St. Bernard's Lily

St. Bernard's Lily (Anthericum liliago) is not considered toxic to cats — the ASPCA reports no known toxic principle in this plant. However, the classification is currently under curator review, and any cat that chews on it may experience a one-off bout of vomiting or soft stool from the fibrous plant material.

No systemic symptoms are expected because no toxic principle has been identified in this plant. At most, ingesting fibrous plant material may cause a single episode of vomiting or loose stool, which would typically resolve within 12–24 hours on its own.

Monitor your cat for vomiting or diarrhea; if either persists beyond a single episode, call your vet. The more important step is confirming the plant is actually St. Bernard's Lily (Anthericum liliago) and not a true Lilium lily — true lilies are severely toxic to cats and can cause kidney failure. If you have any doubt about the plant's identity, call the ASPCA Animal Poison Control Center at (888) 426-4435 immediately.

St. Bernard's Lily is a grass-like perennial with star-shaped white flowers that can resemble true Lilium species, which are among the most dangerous plants for cats and can cause acute kidney failure even in small amounts. If you cannot confirm the exact plant species — from a label, purchase receipt, or a botanist — treat the situation as a potential true lily exposure and contact the ASPCA Animal Poison Control Center at (888) 426-4435 without waiting for symptoms.

St. Bernard's Lily (Anthericum liliago) is not considered toxic to dogs — the ASPCA reports no known toxic principle in this plant. That said, its classification is currently under review pending curator verification, so treat it with the same caution you would any non-toxic plant.

No toxic symptoms are expected. A dog that grazes on the leaves or flowers may experience a single bout of stomach upset from the plant fiber, but this typically resolves on its own within 24 hours. Repeated vomiting or diarrhea warrants a vet call.

Monitor your dog for signs of GI upset — vomiting or diarrhea — and watch for resolution within a day. Call your vet if symptoms continue past one episode, if your dog ate a large quantity, or if there's any chance the plant was actually a true Lilium or daylily, which are genuinely dangerous lookalikes. For urgent concerns, reach the ASPCA Animal Poison Control Center at (888) 426-4435.

Yes — this is the key risk. St. Bernard's Lily (Anthericum liliago) is a grass-like perennial that can be visually confused with true Lilium species or daylilies (Hemerocallis), both of which are severely toxic to dogs and cats. The ASPCA's when-to-call guidance specifically flags this lookalike concern; if you're unsure which plant your dog ate, call your vet or ASPCA Poison Control at (888) 426-4435 immediately.