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 Is Vaping Around Dogs Bad? Vet Verified Facts & Safety Advice Hepper Pet Resources Magnets: Pets and Tobacco Products (7"W x 5"H) Central District Health Tobacco Smoke, Vaping, Nicotine, and The Risk They Pose to Our Pets Green Acres Kennel Shop Vaping Around Dogs: Safety Tips Every Pet Owner Should Know Smoking Experiments on Animals PETA