Why half a gummy hits a small dog hard
A 15-pound dog consuming half a THC gummy is like an adult human eating several full doses at once. Dogs process THC differently, and their smaller size means even modest amounts can cause severe neurological effects. The sugar and gelatin in gummies may also upset their stomach, compounding the problem with vomiting or diarrhea on top of the THC's impact.
Watch for dilated pupils, stumbling, or excessive drooling—these often appear within 30-90 minutes. Your dog may seem 'zoned out' or unresponsive to their name. Avoid trying home remedies; THC toxicity needs professional monitoring because symptoms can escalate to seizures or dangerously low body temperature.
Handling two dogs when only one is exposed
Isolate the affected dog in a dim, quiet room—bright lights and noise can worsen their disorientation. Lay down towels in case of accidents, as bladder control is often compromised. Keep water available but don't force food; nausea is common with THC ingestion.
For your other dog, simply ensure they didn't lick wrappers or crumbs. THC exposure requires actual ingestion, so if they showed no interest in the gummy, their risk is minimal. Still, observe for 6-8 hours in case they secretly nibbled something you missed.
Why small breeds need faster vet care
A 15-pound dog has less blood volume to dilute the THC, so their symptoms often appear sooner and more intensely than in larger dogs. Vets may use IV fluids to support their system, but treatments vary based on how recently the gummy was eaten. Time matters—bring packaging to help the vet estimate THC concentration.
Small dogs also chill faster when lethargic. Wrap your pet in a blanket (not heated) for transport. Avoid car rides unless going to the vet—movement can worsen dizziness. If your dog starts panting excessively or can't stand, this is an emergency, even if other symptoms seemed mild at first.
Post-exposure monitoring for both pets
The exposed dog may sleep deeply for 12-24 hours post-vet visit. Check their breathing isn't abnormally slow (under 8 breaths per minute while resting). Offer bland food like boiled chicken once they show interest, but expect subdued behavior for a day or two.
Your other dog needs no special care, but do a quick home sweep for any additional edibles. Dogs often find these items again later. Store all cannabis products in airtight containers high up—dogs can smell THC-infused foods through packaging.
The step-by-step response, from the first minute to the vet visit, is in our Marijuana / THC Poisoning in Dogs emergency guide.