As cannabis becomes more widely used across North America, it’s not just humans who are being affected — pets, especially dogs, are increasingly being exposed to marijuana in dangerous ways. Whether through secondhand smoke, discarded edibles, or unsupervised access to weed-laced treats, more pet owners are asking the critical question: Can weed kill dogs?
In this article, we’ll explore the effects of cannabis on dogs, how much weed is dangerous, what symptoms to watch for, and most importantly, how to keep your furry friend safe.
If your dog eats weed — whether it’s flowers, edibles, or leftover roaches — you’re dealing with cannabis toxicity, a serious veterinary issue. Dogs are much more sensitive to THC (tetrahydrocannabinol) than humans because they have more cannabinoid receptors in their brains.
When ingested, THC can disrupt your dog’s central nervous system. The effects vary based on size, breed, and how much cannabis was consumed. While CBD is generally considered safer in controlled doses, THC ingestion can lead to severe side effects.
The short answer: yes — but rarely. While death from cannabis toxicity is uncommon, it is not impossible, especially in cases involving:
Veterinarians have reported cases where dogs died after ingesting cannabis products, particularly when edibles also contained chocolate or xylitol — substances that are toxic to dogs even without weed.
Repeated exposure or accidental ingestion without timely treatment may cause seizures, coma, or in extreme cases, death. So, while weed killer for dogs isn’t always a “yes,” it is still a serious enough concern to act quickly.
There is no officially documented “lethal dose” of THC for dogs, but studies suggest as little as 3 grams of marijuana per kg of body weight can be fatal if untreated. However, even much smaller doses can cause serious symptoms like:
The danger increases when dogs consume concentrated products like:
Small dogs are at greater risk due to their size and faster metabolism.
Symptoms may begin within 30–60 minutes of exposure and can last for several hours to days. Look for:
In serious cases, coma or death may follow without veterinary intervention.
If you suspect your dog has ingested weed, tell your vet immediately — honesty is key to accurate diagnosis. Most vets will:
There is no antidote for THC poisoning in dogs, but most recover within 24–72 hours with proper care.
Yes, but with extreme caution. Always use pet-safe garden treatments, similar to how Budora’s blog explains the safe use of neem oil on edibles.
It’s also wise to store all garden chemicals — just like cannabis products — securely and out of reach.
Yes — cannabis oil that contains THC is toxic to dogs. THC oils and tinctures used by humans can easily overwhelm a dog’s system. Even trace amounts of THC can cause distress.
If you’re considering cannabis-based treatment for your dog, use vet-recommended CBD oils only — and make sure they are THC-free.
This is a crucial distinction. While CBD (cannabidiol) is often promoted as safe for pets, it’s important to understand how it differs from other cannabinoids like CBG and CBN.
| Compound | Safety for Dogs | Psychoactive? | Common Use |
|---|---|---|---|
| CBD | Generally safe (with vet approval) | No | Anxiety, inflammation |
| THC | Toxic | Yes | Human recreational use |
Always check product labels — some pet CBD oils may contain trace THC, especially if not properly regulated.
Responsible growers on Budora also recommend choosing low-THC cannabis strains and properly ventilating grow spaces. Follow these safety tips:
If you suspect ingestion, call your vet or the Pet Poison Helpline (800‑213‑6680) immediately.
So, can weed kill dogs? While the answer is “rarely,” the risks are still real and potentially life-threatening. From mild symptoms to emergencies, cannabis toxicity is not something to take lightly. The best approach is prevention, awareness, and prompt action in the event of exposure.
As cannabis becomes more mainstream, it’s our responsibility as pet owners to ensure our homes remain safe for everyone, especially those who can’t speak for themselves.
Yes — though rare, high doses of marijuana, especially edibles, can lead to life-threatening complications if left untreated.
There’s no exact dose, but ingestion of 3g/kg or more of marijuana can be fatal, especially in small dogs or if other toxins (like chocolate) are present.
Only after the product has dried and settled — usually 24 to 72 hours. Always use pet-safe weed killers and follow label instructions.
No — not if it contains THC. While CBD may be safe under vet supervision, THC is toxic and should never be given to dogs.
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