Funny Science: Pavlov and his dog Hoodie

This humorous shirt is a perfect gift for anyone who enjoys science or history. In the late 1890's, Ivan Pavlov did experiments related to conditioning. He discovered that if he rang a bell every time he fed his dog, then eventually his dog would start salivating at the sound of a bell, whether or not there was food present. The joke here is that he was also conditioning himself at the same time.