Stewie the Cancer-detecting Dog
At five years old Stewie boasts an impressive skill set – she can detect early stage lung, breast, and ovarian cancer in humans just by using her nose. Stewie is part of a group of dogs who have been trained to sniff out cancer over the past 12 years. The dogs are trained to understand what different types of cancer smell like, and then tested by their trainers using double-blind studies to see if they can identify cancer samples accurately. The In Situ Foundation, which sponsors a lot of this research, hopes that these canines will soon help with the early detection of cancer in hospitals across the world.