This is Stewie, InSitu Foundation's cancer detection dog. She has been trained to detect all types of cancer, even stage 0 and 1 breast and lung cancer. In this video, Dina Zaphiris, founder of InSitu's 501(c)3, is sending Stewie down the rack to find the cancer. Dina does not know where the cancer is, but the researchers in the room have placed it somewhere in the rack, along with 4 healthy samples (non-cancer samples). Dina calls out slot 2 after Stewie gives her alert. The researcher then tells Zaphiris that Stewie is correct, and she goes on to receive her reward. Stewie is methodical and extremely accurate.