Doris Herrmann was born deaf in 1933 in Basel, Switzerland, and from the age of three, she possessed a mystical attraction to kangaroos. She recalls seeing them at that age for the first time at the Basel Zoo, and spending every spare moment visiting them from then on. Eventually, her fascination grew into passionate study of their behavior. Her dedication caught the attention of the zookeepers who provided her greater access to these extraordinary animals. Despite her challenges with communication, Herrmann wrote a scientific paper about the kangaroo's pouch hygiene when raising a joey....