Happy, the Asian elephant known for teaching researchers that elephants can recognize themselves, has been euthanized at the Bronx Zoo due to age-related health issues. At 55 years old, Happy spent nearly half a century at the zoo, becoming a beloved figure both for her contributions to scientific understanding of elephant self-awareness and her endearing personality. Her passing has left the zoo staff and the public mourning the loss of a cherished animal. In her later years, Happy lived alone, a poignant reminder of the complexities of animal care in captivity.