Frontiers Dog and cat exposures to drugs of abuse identified by the California animal health and food safety laboratory system 20132023 Marijuana Toxicosis in Pets Cummings School of Veterinary Medicine My Dog Ate Marijuana. What Do I Do? EVCC 24 7 ER Vet Beagle dogs used for smoking tests at Dog Toxicity Unit, Alderley News Photo Getty Images One of our customers has had first hand experience of this recently. One cigarette butt can contain enough nicotine to poison a dog. Especially puppies and smaller breeds. What can happen