The Detrimental Effects of Hamsters and Smoking

A (pointless) smoke inhalation toxicity study exposed various rodents to cigarette smoke for four hours, five days a week. Unexpectedly, many of the animals responded by placing their feces in the smoke-delivery tubing, repeatedly and in quantity. One poor hamster stuffed the air inlet so effectively that he/she suffocated.

Source: Pleasurable Kingdom: Balcombe, Jonathon. Animals and the Nature of Feeling Good. Macmillan, 2006.