Secondhand smoke causes almost 50,000 deaths in adult nonsmokers in the United States each year, and there's a mountain of evidence that secondhand smoke can affect a pet's health as well.
Studies have linked smoke exposure to oral cancer and lymphoma in cats and nasal and lung cancer in dogs. Both dogs and cats can suffer from bronchial disease due to smoke.
A 2007 study found a link between secondhand smoke, lung cancer, eye, skin and heart problems in pet birds.
People are motivated to help their pets and so hopefully these smoking pet owners will not expose their pets or their families to secondhand smoke.