PawAI LabPawAI LabTry it Free

Laurel Poisoning in Dogs: Signs, Treatment, and Prognosis

PawAI Lab
8 min read

Learn how grayanotoxins in mountain laurel and cyanogenic glycosides in cherry laurel can affect a dog's nervous system, heart, and breathing, what signs may develop after exposure, and how a veterinarian may manage poisoning.

Quick Answer

Laurel poisoning in dogs can result from two different types of toxins. Mountain laurel (Kalmia species) contains grayanotoxins that can disrupt nerve and heart function, while cherry laurel (Prunus laurocerasus) contains cyanogenic glycosides that can release cyanide. Signs may include drooling, vomiting, weakness, and in serious cases breathing difficulty or collapse. There is no safe home treatment. If your dog has eaten laurel, contact a veterinarian or animal poison-control service immediately.

Before using any tool, contact a veterinary professional if your dog may have eaten laurel.

  • US: ASPCA Animal Poison Control (888-426-4435) or Pet Poison Helpline (855-764-7661)
  • UK: Animal PoisonLine (01202 509000) or your nearest veterinary emergency clinic
  • Canada: ASPCA Animal Poison Control (888-426-4435) or Pet Poison Helpline (855-764-7661)
  • AU: Animal Emergency Centre or your regular vet
  • EU: Contact your nearest veterinary emergency service

TOXICITY CHECKER

Check the item and pet details for general, species-aware risk information while you contact a veterinary professional when needed.

Check an Item

Do not delay emergency veterinary or poison-control advice to use this tool.

Safety Verdict

Toxic. The common name laurel refers to several plants that are hazardous to dogs. Mountain laurel (Kalmia latifolia) and related Kalmia species contain grayanotoxins, which are compounds that can interfere with sodium channels in nerve and heart cells, potentially disrupting normal electrical signaling. Cherry laurel (Prunus laurocerasus), a widely planted evergreen hedge, contains cyanogenic glycosides that can release cyanide when plant tissue is chewed or damaged, interfering with the body's ability to use oxygen.

All parts of these plants may be toxic, including leaves, stems, flowers, and seeds. Toxin concentration can vary with plant age, season, and species, so no reliable safe amount can be established. Any known or suspected ingestion should be treated as potentially serious.

What Should the Owner Do Now?

  1. Contact a veterinarian or animal poison-control service immediately. The type of laurel involved can affect the approach, so professional guidance is important.
  2. Do not induce vomiting unless a veterinarian or poison-control professional directly instructs you to do so. Improper induction can cause additional harm.
  3. Collect relevant information (see the section below) so the veterinary team can assess the situation accurately.
  4. Do not give food, milk, salt, charcoal, or any home remedy. These are not proven treatments for laurel poisoning and may worsen the situation.
  5. Follow the veterinarian's instructions regarding examination, monitoring, or bringing in a sample of the plant for identification.

If you are unsure which type of laurel your dog ate, professional consultation is still recommended, because both mountain and cherry laurel can be hazardous.

What Signs May Occur?

Signs of laurel poisoning in dogs may develop within a few hours of ingestion, though the timeline can vary. Because mountain laurel and cherry laurel contain different toxins, the signs may overlap but can also differ.

Mountain Laurel (Grayanotoxins)

Grayanotoxins can affect nerves and the heart. Signs may include:

  • Drooling or excessive salivation
  • Vomiting
  • Nasal discharge or tearing of the eyes
  • Weakness or reluctance to move
  • Slow heart rate or irregular heartbeat
  • Wobbly or unsteady gait
  • In severe cases, low blood pressure or collapse

Cherry Laurel (Cyanogenic Glycosides)

Cyanogenic glycosides can interfere with oxygen use in the body. Signs may include:

  • Drooling and vomiting
  • Difficulty breathing or rapid breathing
  • Bright red gums that may later darken
  • Weakness, lethargy, or collapse
  • In severe cases, shock

In serious cases, both types of laurel can affect breathing and circulation, which may become life-threatening. This is why prompt veterinary care is important, even when a dog initially appears normal.

What Information Should Be Ready?

When you contact a veterinarian or poison-control service, having the following details available can help them assess the situation more efficiently:

  • Dog's details: species, breed, approximate age, and body weight
  • Plant involved: mountain laurel, cherry laurel, or unknown; whether it is a garden ornamental or wild plant
  • Part of plant consumed: leaves, stems, flowers, fruit, or seeds
  • Estimated amount: best guess of how much was chewed or swallowed
  • Time of ingestion: when the exposure occurred, or the window of time during which it may have happened
  • Current symptoms: any drooling, vomiting, weakness, breathing changes, or gum color changes
  • Plant sample: if available, a photograph or cutting of the plant to help confirm identification
  • Medical history: any pre-existing heart or breathing conditions, current medications, or other health concerns

Provide honest estimates rather than precise numbers. The veterinary team can work with approximate information to determine the best course of action.

Differences That May Affect Risk

Laurel poisoning risk in dogs is influenced by several factors, but none of them allow for a reliable prediction of outcome:

  • Plant type: Mountain laurel and cherry laurel contain different toxins, which can produce different signs and require different approaches.
  • Part and maturity of plant: Toxin concentration can vary between leaves, stems, flowers, and seeds, and may change with the season.
  • Amount ingested: Larger ingestions may be more likely to produce severe signs, but individual sensitivity also plays a role.
  • Body size: Smaller dogs may be at greater risk from a given amount of plant material, but toxicity can occur in dogs of any size.
  • Pre-existing conditions: Dogs with existing heart or respiratory conditions may be more vulnerable to the effects of laurel toxins.

When to Contact a Veterinarian

Contact a veterinarian or animal poison-control service immediately if your dog has eaten or chewed on laurel. Do not wait for symptoms to appear.

Emergency signs that require urgent veterinary attention include:

  • Persistent vomiting or drooling
  • Weakness, wobbliness, or collapse
  • Difficulty breathing or changes in breathing pattern
  • Changes in gum color
  • Slow, fast, or irregular heartbeat

Non-urgent follow-up: If the ingestion occurred hours or days ago and your dog appears normal, a veterinary examination is still recommended to assess for delayed effects and to confirm that no intervention is needed.

FAQ

How is laurel poisoning in dogs treated?

Treatment depends on the type of laurel involved and the signs present. A veterinarian may provide supportive care such as intravenous fluids, medications to manage heart rhythm or breathing, and monitoring of vital signs. In some cases, decontamination may be considered if ingestion was recent. Outcomes are generally better when treatment begins before severe signs develop.

What is the prognosis for laurel poisoning in dogs?

Prognosis can vary based on the type of laurel, the amount ingested, and how quickly treatment begins. Dogs that receive prompt veterinary care before severe breathing or heart effects develop often have a better outlook. Delayed treatment or large ingestions can be more difficult to manage, which is why early contact with a veterinarian is important.

How can I tell the difference between mountain laurel and cherry laurel?

Mountain laurel (Kalmia latifolia) is typically a broadleaf evergreen shrub with leathery leaves and clusters of pink or white flowers, often found in woodland areas. Cherry laurel (Prunus laurocerasus) is an evergreen shrub with glossy leaves and spikes of white flowers followed by dark berries, commonly used in hedges. If you are unsure, a plant sample or photograph can help a veterinarian or plant expert confirm the species.

Can a dog recover after eating laurel?

Yes, recovery is possible, particularly with prompt veterinary care. The likelihood of recovery can depend on the type and amount of laurel consumed, the dog's overall health, and how quickly treatment begins. A veterinarian can assess the individual situation and provide guidance on expected outcomes.

TOXICITY CHECKER

Not sure whether another plant or household item may be risky for your dog? Get general, species-aware safety information in seconds.

Open Toxicity Checker

This tool provides general safety information only and does not replace veterinary advice.

Sources

Disclaimer

This article and the PawAI Toxicity Checker provide general safety information and cannot determine an individual pet's toxicity risk or replace a veterinarian or animal poison-control service. If exposure may have occurred, contact an appropriate professional promptly, even if your pet appears well.