Last medically reviewed: 2026-06-05
Is Marijuana (Cannabis) Toxic to Cats?
Marijuana is toxic to cats, and cats are more sensitive to THC than dogs or humans. Ingestion of cannabis plant material, edibles, or exposure to secondhand smoke can cause incoordination, vocalization, drooling, and in severe cases, seizures and coma. Cannabis edibles combined with chocolate are especially dangerous. If you suspect your cats has ingested marijuana (cannabis), contact your veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 immediately.
Is Marijuana (Cannabis) and Cats in danger right now?
If your Cats ate Marijuana (Cannabis), you need to act fast. This emergency kit has everything vets recommend — before you need it.
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Every minute counts. Don't wait until it's too late.
| Toxic? | Severity | Time to Onset | Commonness | Urgency |
|---|---|---|---|---|
| Yes | Moderate | 30–60 minutes | Increasing | Urgent |
The Toxic Principle
The dangerous compound in Marijuana (Cannabis) is THC (tetrahydrocannabinol).
Cats, like dogs, have more cannabinoid receptors than humans, making them more sensitive to THC. Cats may be even more susceptible than dogs based on limited clinical data. THC affects the central nervous system, causing depression, incoordination, and altered sensory perception. Cannabis butter and oil-based edibles are particularly dangerous due to higher THC bioavailability when combined with fat.
How Much Is Dangerous?
The risk depends on your cats's weight and the amount ingested.
| Pet Weight | Dangerous Amount | Expected Severity |
|---|---|---|
| Any cat (small amount) | A small amount of plant material or a lick of edible | Moderate |
| Any cat (edibles) | Cannabis edibles are concentrated and more dangerous | Severe |
| Any cat (with chocolate) | Cannabis edibles containing chocolate are a double toxin | Severe |
| Any cat (secondhand smoke) | Prolonged exposure to smoke in unventilated areas | Mild |
Symptoms to Watch For
Symptoms of marijuana (cannabis) poisoning in catss typically progress through these stages:
Onset
30–90 minutes- Drooling
- Vomiting
- Depression or agitation
- Dilated pupils
- Sensitivity to touch/sound
Peak
2–8 hours- Severe incoordination
- Vocalization
- Hypothermia or hyperthermia
- Urine dribbling
- Static ataxia
Severe
8–24 hours- Seizures (rare)
- Coma (rare)
- Most cats recover with supportive care
Don't Let This Happen to Your Cats
You just read what marijuana (cannabis) does to catss. The symptoms. The suffering. The $200–$2,000 vet bill. The question is: are you prepared if it happens again?
Get the Emergency Kit — Be Ready →What to Do Right Now
- 1 Call your veterinarian or ASPCA Poison Control at (888) 426-4435 — be honest about what was consumed.
- 2 If edibles with chocolate were eaten, treat as a chocolate emergency too.
- 3 Move your cat to a safe, quiet, warm space.
- 4 Do NOT try to 'wait it out' — veterinary monitoring is recommended.
- 5 Be honest with your vet — they will not report you.
- 6 Keep all cannabis products securely stored.
Treatment and Recovery
Supportive care: IV fluids, thermoregulation, anti-nausea medication. Most cats recover within 24–72 hours. Severe cases may require sedation and extended monitoring. Prognosis is generally good. Combined chocolate/cannabis exposure is more serious.
Estimated Cost
$200 – $2,000
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Can secondhand marijuana smoke hurt my cat?
Prolonged exposure to concentrated smoke in a poorly ventilated space can affect cats. If you use cannabis, do so in a well-ventilated area away from your pets. Brief, indirect exposure is unlikely to cause significant problems.
Related Dangers
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Medical Disclaimer: The information on this page is for educational purposes only and is not a substitute for professional veterinary advice. If you suspect your pet has been poisoned, contact your veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 immediately. This page was last reviewed on 2026-06-05.