If a cat eats weed, treat it as a veterinary emergency instead of a wait-and-see situation. Cats are small, and THC affects them harder than it affects dogs or people. Call your vet or a pet poison hotline as soon as you notice the ingestion, keep the packaging and a note of how much was in it, and do not try to make the cat vomit on your own. Most cats that get prompt care come through within 12 to 24 hours, but edibles that also contain chocolate, xylitol, or raisins raise the risk, and severe cases can involve tremors, a low body temperature, or coma. While you wait for advice, keep the cat quiet, warm, and away from stairs or high furniture it could fall from.

symptoms of cannabis poisoning in pets

Why cats react worse than dogs

Cats have a small body mass and a liver that processes plant compounds along different pathways than a dog's liver does. A piece of a 10 mg edible that would barely register in a 40 pound dog can produce heavy sedation in an 8 pound cat. Vomiting is also less reliable as a first sign, because cats often swallow the edible and keep it down while the THC is absorbed. That absorption is part of why edibles are more dangerous than smoked flower: a cat that walks through secondhand smoke gets a light exposure, while a cat that eats a brownie gets the full dose at once.

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Signs to expect, in order

• First 30 to 60 minutes: staggering, head swaying, unusual calm, staring, or a cat that seems suddenly clumsy.
• One to three hours: dilated pupils that do not react to light, low head carriage, vomiting, drooling, tremors, and loss of bladder control.
• Three to twelve hours: deep sleep that is hard to interrupt, slow heart rate, low body temperature, and in serious cases slow or irregular breathing.
• Beyond twelve hours: gradual return to normal behavior, though heavy edible exposures can run 24 to 72 hours in cats.

Some cats do the opposite and become agitated, vocal, or startled by touch. Either pattern warrants a call.

Veterinary Emergency vs. Home Care for Cannabis: A Comprehensive Buying Guide

Dose ranges veterinarians use as a rough guide

Published toxicology ranges come mostly from dog cases, so use them as direction, not as a rule for your cat. A cat is likely to show signs at a lower dose per kilogram than these numbers suggest.

my dog ate cannabis what to do

• Under 1.5 mg THC per kg of body weight: mild sedation, wobbling, dilated pupils in many dogs.
• 1.5 to 3 mg per kg: vomiting, urinary incontinence, tremors, and marked lethargy.
• Above 3 mg per kg: severe signs including low heart rate, low body temperature, and unresponsiveness.
• Above 20 mg per kg: rare reports of seizures and coma in animals, with death reported in a small number of cases.

To put that in context, a 10 pound cat is about 4.5 kg. A quarter of a 10 mg edible sits near the middle of the moderate range.

Other ingredients that change the picture

Chocolate adds theobromine and caffeine, both of which push the heart rate up while THC pushes it down, and the combination is harder to manage. Xylitol causes low blood sugar and liver injury in dogs and is a risk in cats as well. Raisins, macadamia nuts, and high-fat butter or oil bases each add their own problem. If the edible was a baked good or a gummy with added sugar alcohols, tell the poison hotline exactly what was in it.

What to do in the first hour

1. Move the cat to a quiet room with a soft bed and a low side so it can rest without falling.
2. Call your vet, an emergency clinic, or a pet poison hotline before doing anything at home.
3. Do not induce vomiting unless a veterinarian tells you to. Cats that are sedated can inhale vomit.
4. Do not give human activated charcoal, coffee, or any home stimulant.
5. Bring the package, label, and a rough estimate of how much was eaten.
6. Keep the cat warm with a blanket and check breathing every 15 minutes while you travel.

What to look for when buying cat-proof cannabis storage

Storage is the part you can control before an emergency happens. If you keep cannabis at home, the container matters as much as the product inside it.

• Lock type: a keyed or combination lock beats a latch. Child-resistant packaging is not cat-resistant, and many cats solve a push-and-twist lid.
• Odor seal: a gasket lined lid or a double wall jar with an activated carbon layer cuts smell and keeps paws out of soft bags.
• Opacity: solid metal or opaque glass hides contents from view and holds a steadier internal humidity than clear plastic.
• Capacity: a 1 to 2 ounce jar handles most personal stashes. Larger households should split product into two locked containers so one is never left open on a counter.
• Placement: five feet up or higher, inside a cabinet or drawer, and never on a coffee table, nightstand, or bathroom counter where a cat already jumps.
• Pet CBD products: choose items with a third party certificate of analysis that reports THC as not detected. Hemp labels claiming under 0.3 percent THC describe the plant, not the guaranteed dose in the bottle.

Pitfalls that trip people up

• Soft zipper bags and resealable pouches. Cats chew through them and the smell draws them in.
• Storing joints or edibles in a purse, backpack, or jacket pocket. That is the most common route of exposure reported by poison control.
• Waiting for symptoms to peak before calling. Treatment is easier early.
• Assuming a small cat cannot reach the top shelf. Cats reach shelves that owners swear are out of range.
• Leaving gummies in a candy dish or on a nightstand because they look like normal candy.
• Giving a cat a human CBD tincture that contains trace THC or added flavoring oils.

FAQ

How long until signs show up?

Smoked exposure shows in minutes. Edibles typically start showing within 30 to 60 minutes, though full absorption can take two to three hours.

How much weed is dangerous for a cat?

There is no established safe dose for cats. A single small gummy or a corner of a baked edible has caused heavy sedation in cats, so assume any ingestion is a call to a professional.

Can a cat die from eating weed?

Death is rare and usually tied to a large edible dose, a second toxin such as chocolate or xylitol, or a delay in care. Most cats recover fully with supportive treatment.

Will my cat act normal the next day?

Many cats are groggy for 24 to 48 hours and then return to baseline. If your cat is still unsteady, not eating, or breathing fast after that window, go back to the vet.

Should I take the cat to an emergency clinic if it seems calm?

Call first. A calm cat may be in the early phase of a dose that gets worse, and the hotline can tell you whether to come in.