There is more evidence now that links second hand smoke to some cancer in pets. Cats that live in a house with a smoker have shown an increase risk of developing  both lymphoma and cancer of the mouth. Regarding lymphoma, studies have shown that the risk becomes greater with increased exposure to the smoke.  Cats are at greater risk for cancer of the mouth because the smoke settles on their fur and it is then ingested as they groom themselves.  This results in ingestion of  carcinogens with high concentrations in the oral cavity.

There is some evidence in an increase of bladder cancer in dogs after exposure to herbicides and pesticides . Studies also show that dogs living in urban areas rather than rural areas show an increase of  lymphoma, cancer of  tonsils and cancer of the nasal passages.

Despite all of these reports there is still no conclusive evidence of possible environmental causes of cancer in pets.

Remember, your pets count!

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