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 Don't Puff Around Pets American Lung Association Secondhand smoke and e cigarette aerosol exposure in dogs and cats: A scoping review with implications for smoking cessation among pet owners Second hand Smoke Healthy Pets, Healthy Families Hub Veterinary Public Health LAC DPH