Fetter Bush Toxic?

Updated 2026-03-06| 4 min read| 2,551 found this helpful

Leucothoe spp.

Leucothoe spp. is confirmed toxic to cats, dogs, and horses per ASPCA data

Grayanotoxins are the primary toxic compound driving adverse health effects

Ingestion requires immediate veterinary care to avoid life-threatening cardiac complications

FAQ

Is Fetter Bush toxic to Humans?

No confirmed human toxicity data is publicly available, but ingestion is not recommended as grayanotoxins may cause adverse reactions (Low)

Is Fetter Bush toxic to Cats?

Vomiting, diarrhea, weakness, cardiac failure (High)

Is Fetter Bush toxic to Dogs?

Vomiting, diarrhea, weakness, cardiac failure (High)

Is Fetter Bush toxic to Horses?

Diarrhea, weakness, cardiac failure (vomiting does not occur in horses) (High)

Not sure which plant? Snap a photo to ID in 1 secondGet App

Toxicity Details

Humans

Low

No confirmed human toxicity data is publicly available, but ingestion is not recommended as grayanotoxins may cause adverse reactions

Cats

High

Vomiting, diarrhea, weakness, cardiac failure

Dogs

High

Vomiting, diarrhea, weakness, cardiac failure

Horses

High

Diarrhea, weakness, cardiac failure (vomiting does not occur in horses)

Toxicity Snapshot

Toxic PartsAll plant parts (leaves, flowers, stems, roots) are considered toxic

Exposure RouteIngestion is the primary exposure route; skin contact may cause mild irritation in sensitive individuals

Toxic CompoundsGrayanotoxins

First Aid & Prevention

First 30 Minutes

• Remove any remaining plant material from the exposed animal's mouth and rinse thoroughly with clean water
• Do not induce vomiting unless explicitly instructed to do so by a licensed veterinarian
• Collect a sample of the ingested plant to enable fast, accurate identification for treatment guidance

Contact Vet Immediately

• If a cat, dog, or horse is confirmed to have ingested any amount of Fetter Bush, even if no symptoms are present
• If the exposed animal shows vomiting, diarrhea, lethargy, or abnormal heart rate after potential exposure
• If you find chewed Fetter Bush plant parts near your pet or grazing area for horses

Prevention

• Remove all Leucothoe spp. plants from areas accessible to pets, horses, and other grazing livestock
• Label ornamental plants in your garden and educate caregivers to recognize Fetter Bush to avoid accidental exposure
• Avoid feeding unknown forage or ornamental shrubs to horses or other livestock

Treatment & Prognosis

• Veterinary decontamination via activated charcoal or gastric lavage, appropriate for the species and exposure timeline
• Supportive care including IV fluid therapy, antiemetics, and continuous cardiac monitoring
• Administration of targeted medications to regulate abnormal heart rhythm and address hypotension if present

Emergency? Open PlantFun for real-time AI guidanceGet App

Professional Toxicology

Scientific NameLeucothoe spp.

AliasesDog Laurel、Dog Hobble、Black Laurel

Toxicity Grade

HumansLow

CatsHigh

DogsHigh

HorsesHigh

Target Organs

Gastrointestinal tractCardiovascular systemNervous system

Mechanism of Action

• Grayanotoxins bind to and modify sodium channel function in nerve and muscle cells, disrupting normal cardiac and neuromuscular signaling

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle: Suspected toxic; grayanotoxins affect most ruminants, and ingestion may cause gastrointestinal distress and cardiac complications

Sheep: At risk of toxicity if grazed on Fetter Bush; clinical signs are expected to match those observed in horses

Small mammals (rabbits, guinea pigs): Ingestion may lead to gastrointestinal distress and potential cardiac issues; veterinary care is recommended after exposure

Confusion Risk

The following plants look similar and may be confused:

Mountain Laurel Kalmia latifolia

Both are evergreen Ericaceae shrubs with glossy leaves and clustered pink/white blooms; both contain grayanotoxins, so misidentification does not change toxicity risk

Rhododendron Rhododendron spp.

Shares the same family, evergreen foliage, and clustered bloom habit as Fetter Bush; both are toxic to pets and grazing animals due to grayanotoxin content

Use PlantFun to scan and avoid misidentificationGet App

Related Toxic Plants

Azalea

Rhododendron spp. (Azalea group)

High toxicity

Andromeda polifolia

Moderate to High toxicity

Download PlantFun App

Identify, grow and care for plants effectively!

Instant Plant ID

Take a photo to quickly identify plants.

Smart Care Reminders

Generate watering and care schedules.

Toxicity & Disease Diagnosis

Identify toxic plants and pests with treatment advice.

Data Sources

1. ASPCA Animal Poison Control

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

View Full Plant Wiki