Lily Toxic?

Updated 2026-03-06| 2 min read| 996 found this helpful
Lilium species
1

All plants in the Lilium genus are highly toxic to cats, with even tiny ingestion amounts posing a fatal risk

2

Lilies have no documented toxicity to dogs or horses per official ASPCA toxicology records

3

The specific toxic principle that causes lily poisoning in cats remains unidentified as of current research

FAQ

Is Lily toxic to Humans?

No adverse toxicity effects reported in humans from casual contact or ingestion of lilies per available data (Non-toxic)

Is Lily toxic to Cats?

Acute, potentially irreversible kidney failure, which may be preceded by vomiting, lethargy, loss of appetite and decreased urination (Severe)

Is Lily toxic to Dogs?

No known toxic effects; ingestion does not typically cause adverse clinical signs (Non-toxic)

Is Lily toxic to Horses?

No known toxic effects; ingestion does not typically cause adverse clinical signs (Non-toxic)

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Toxicity Details

Humans
Non-toxic

No adverse toxicity effects reported in humans from casual contact or ingestion of lilies per available data

Cats
Severe

Acute, potentially irreversible kidney failure, which may be preceded by vomiting, lethargy, loss of appetite and decreased urination

Dogs
Non-toxic

No known toxic effects; ingestion does not typically cause adverse clinical signs

Horses
Non-toxic

No known toxic effects; ingestion does not typically cause adverse clinical signs

Toxicity Snapshot

Toxic PartsAll parts of the plant are toxic to cats, including flowers, leaves, stems, roots, pollen, and water from cut lily vases
Exposure RouteOral ingestion, including eating plant matter, grooming lily pollen off fur or paws, and drinking water that has held cut lilies
Toxic CompoundsUnknown; no specific toxic compound has been isolated and confirmed by ASPCA researchers to date

First Aid & Prevention

First 30 Minutes

  • • Immediately remove any remaining lily material from the affected pet's mouth, fur and surrounding area
  • • Do not induce vomiting unless explicitly instructed to do so by a licensed veterinarian
  • • Collect a sample of the ingested plant to help veterinary staff confirm exposure quickly

Contact Vet Immediately

  • • A cat has ingested any part of a lily plant, pollen, or lily vase water, even if no symptoms are visible
  • • A cat displays vomiting, lethargy, loss of appetite, or reduced urination after possible lily exposure
  • • Any suspected lily contact occurs with a cat, as delayed treatment significantly increases fatality risk

Prevention

  • • Do not bring fresh cut lilies or potted Lilium plants into households or spaces accessible to cats
  • • Wipe up any fallen lily pollen immediately to avoid accidental ingestion during cat grooming
  • • Verify the identity of all new household plants to ensure no toxic Lilium species are present if you own cats

Treatment & Prognosis

  • • Veterinary administration of activated charcoal to bind unabsorbed toxins in the gastrointestinal tract
  • • 48-72 hours of intravenous fluid therapy to support kidney function and prevent permanent renal damage
  • • Regular monitoring of kidney function blood values for at least 72 hours post-exposure to catch early signs of injury
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Professional Toxicology

Scientific NameLilium species
AliasesEaster Lily、Tiger Lily、Asiatic Lily、Oriental Lily
Toxicity Grade
HumansNon-toxic
CatsSevere
DogsNon-toxic
HorsesNon-toxic
Target Organs
Kidneys (renal system)
Mechanism of Action

• Exact toxic mechanism is not fully understood; ingested compounds are believed to cause acute necrosis of renal tubular cells in cats, leading to complete kidney failure

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Small companion mammals (rabbits, guinea pigs, hamsters): No formal toxicity studies available, but ingestion is not recommended as individual adverse reactions may occur
Pet birds: No confirmed toxicity reports, but supervision is advised to prevent accidental ingestion of plant material
Confusion Risk

The following plants look similar and may be confused:

Daylily Hemerocallis species
Visually very similar to true Lilium species, also highly toxic to cats; true lilies grow from bulbs while daylilies grow from tuberous roots
Amaryllis Amaryllis belladonna
Has similar large trumpet-shaped blooms to lilies, but belongs to the Amaryllidaceae family; toxic to all common companion animals unlike true Lilium species that only harm cats
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Data Sources

This information is for reference only and does not constitute medical advice. If ingestion or poisoning is suspected, seek medical or veterinary attention immediately.

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