Unfortunately we see this too often with idiots (already probably stoned) thinking that their pet wants to be just as crazy as their owner is. The effect on the dog is much more harmful. The dog goes into a panicky paranoid state sometimes requiring anti-convulsive drugs. Vets that have seen it will always recognize it and although it resembles chocolate toxicity a little there are subtle differences. Dogs will eat a "stash" because it must have some smell they find attractive. Other times they eat irresponsible persons "adult cookies". I am not passing judgement on their owners usage (well yes I am)... anyway if they have locked away on their premises for private usage then that's exactly where it should remain

