My Dog Ate Weed

Yes, THC is toxic to dogs. Dogs have more cannabinoid receptors in their brains than humans, which makes them far more sensitive to marijuana. Symptoms include loss of coordination, dilated pupils, urine dribbling, exaggerated startle responses, and in severe cases, coma. Edibles are especially dangerous because they contain higher THC concentrations and may include chocolate or xylitol. Here's what to do right now.

What to Do Right Now

Stay calm. Most dogs recover fully within 12 to 24 hours with proper care.
Figure out what they ate. Was it flower, an edible, a vape cartridge, or a concentrate? Edibles and concentrates are more dangerous. Check if the edible contains chocolate or xylitol.
Estimate the amount. A single gummy versus an entire batch of brownies are very different situations.
Call your vet or ASPCA Animal Poison Control at (888) 426-4435. Be honest about what your dog ate -- vets do not report you. They need accurate information to treat your dog.
Do not leave your dog alone. A sedated dog can vomit and aspirate (inhale vomit into lungs), which can cause pneumonia.
Keep them warm and quiet. Minimize stimulation -- loud noises and bright lights can worsen their distress.

Why THC Is Dangerous for Dogs

Dogs have a significantly higher density of cannabinoid receptors in their brains compared to humans. This means a dose that would be mild for a person can be overwhelming for a dog. THC affects their nervous system, causing loss of motor control, disorientation, and in high doses, depression of the central nervous system that can lead to a coma-like state.

The additional danger with edibles is twofold. First, THC in edibles is already decarboxylated (activated) and often suspended in fats that increase absorption. Second, many edibles contain ingredients that are independently toxic to dogs -- chocolate contains theobromine, and sugar-free products may contain xylitol, which can cause liver failure.

How Much Is Too Much?

There is no established "safe" dose of THC for dogs. Any amount can cause symptoms. The severity depends on the dose relative to the dog's weight:

What They Ate	Risk Level	Action
Small amount of flower (a few buds)	Moderate	Call vet, monitor at home if mild symptoms
Single edible gummy or cookie	High	Call vet -- concentrated THC + possible other toxins
Multiple edibles or high-dose product	Emergency	Go to the vet or emergency clinic immediately
Vape cartridge or concentrate	Emergency	Go to the vet immediately -- very high THC dose
Edible containing chocolate or xylitol	Emergency	Go to the vet immediately -- dual toxicity risk

When to Call the Vet

Call your vet or go to an emergency animal hospital if your dog shows any of these signs:

Severe wobbling, inability to walk, or falling over
Unresponsiveness or coma-like state
Continuous vomiting
Urine dribbling they cannot control
Seizures or severe tremors
Very slow heart rate or very slow breathing
Hypothermia (cold to the touch, shivering)

Be honest with the vet. They are not going to call the police. They need to know exactly what your dog ingested so they can provide the right treatment. Marijuana toxicity is one of the most common poisoning cases vets see -- they will not judge you.

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Frequently Asked Questions

Can a dog die from eating weed?

Death from marijuana ingestion alone is rare in dogs, but it can happen -- especially with highly concentrated edibles or if the edible also contains chocolate or xylitol. The bigger risk with flower or low-dose edibles is aspiration pneumonia from vomiting while sedated. Dogs in a deep stupor may inhale their own vomit. Puppies and small dogs are at the highest risk. Any dog that is unresponsive or comatose needs emergency veterinary care.

How long does it take for THC to affect a dog?

Symptoms usually begin within 30 to 60 minutes of ingestion, though edibles can take longer (up to 2 to 3 hours) because they must be digested first. If your dog ate marijuana flower, onset is typically faster. THC is rapidly absorbed and distributed to fatty tissues, including the brain, which is why neurological symptoms appear first.

How long does THC stay in a dog's system?

Most dogs recover from marijuana toxicity within 12 to 24 hours, though some may seem off for up to 72 hours depending on the dose and the dog's size. THC is stored in fat cells and released slowly, which is why recovery can be gradual. Severely affected dogs that receive IV fluids and supportive care at the vet typically recover faster.

Should I tell the vet my dog ate marijuana?

Yes. Be completely honest with your veterinarian. Vets do not report drug use to law enforcement -- their only concern is treating your dog. Without knowing the actual substance, the vet has to run expensive tests to rule out other toxins, which delays treatment and costs you more money. Marijuana toxicity in dogs is extremely common and your vet has seen it many times before.

Are edibles more dangerous than marijuana flower for dogs?

Yes. Edibles are typically more dangerous for three reasons: they contain higher concentrations of THC than flower, they are often made with butter or oil which increases THC absorption, and they may contain other toxic ingredients like chocolate or xylitol (an artificial sweetener that is extremely toxic to dogs). A single edible gummy or cookie can contain a much larger dose than a dog would get from eating loose flower.