09/14/2026
After a walk near the lighthouse, our older but very healthy dog started acting like she was having a stroke. The emergency vet heard the symptoms, and immediately said, “It sounds like she got into some THC” and noted that they have seen a lot of these cases in their service area.
Here’s my deep dive, summarized:
🐾 THC POISONING IN DOGS:
THC poisoning can cause surprisingly similar symptoms to a stroke or other neurological issue.
⛑️ KNOW THE SIGNS:
• Sudden stumbling, swaying, or falling
• Vocalization— barking, growling, howling
• Sudden onset of the “zoomies” or needing to run.
• Dribbling urine or loss of bladder control — a particularly characteristic sign
• Extreme sleepiness or appearing “out of it”
• Glassy or dilated eyes
• Trembling or twitching
• Unusual sensitivity to sound, touch or movement
• Drooling or vomiting
• Changes in heart rate, breathing or body temperature
• Severe cases can involve seizures, coma or breathing problems
WHAT MIGHT A DOG FIND?
Dogs can encounter discarded cannabis products on trails, beaches, parks and campgrounds—and it may take only a small amount to make a dog very sick.
• Ma*****na flower, joints or “roaches”
• Gummies, brownies or other edibles
• V**e pens or cartridges
• Oils, resins, wax, concentrates or “dabs”
• Discarded food containing THC
• Even human waste may contain THC metabolites after cannabis use. 🤢
⚠️ IT DOESN’T TAKE MUCH.
Today’s ma*****na flower can contain high concentrations of THC, while some cannabis concentrates can contain 80–90% THC. Dogs are very sensitive to THC, so even a small discarded amount can produce pronounced symptoms—especially in a smaller dog.
🍫 EDIBLES CAN PRESENT ADDITIONAL DANGERS.
THC may not be the only concern. Some products also contain chocolate or xylitol, which can be dangerous to dogs.
🚨 IF YOUR DOG SUDDENLY DEVELOPS NEUROLOGIC SYMPTOMS:
Even with all of this, don’t just assume it’s THC. Stroke, seizures, vestibular disease and other poisonings can look similar.
• Contact your veterinarian right away.
• Tell the veterinarian if THC exposure is even a possibility. We had no idea this could even be a “thing” but the vet has seen enough of these cases to immediately suspect it.
• Do not induce vomiting unless a veterinarian specifically instructs you to.
• If you find packaging or remnants of what the dog may have eaten, take a photo, or if possible, safely bring them with you.
The good news: Most dogs with uncomplicated THC intoxication recover well. Our canine acted “high” for about 12 hours and 48 hours out is still sleeping a lot more than usual.
🐕 ON THE TRAIL or BEACH
Watch for discarded food, cannabis remnants as mentioned above, v**e products, f***s and other unidentified objects. A strong “leave it” command can be an important safety tool.
Please dispose of cannabis products responsibly—and watch what your dog picks up outdoors