Happy, the First Zoo Elephant to Pass a Self-Recognition Test, Euthanized at 55

The Bronx Zoo is mourning the loss of Happy, a female Asian elephant who was euthanized at age 55 on Tuesday, May 26. 'Happy ...

Happy, who taught researchers that elephants can recognize themselves, is euthanized

Happy, a Bronx Zoo elephant who gave researchers new insight into the animal's behavior and became the crux of a closely ...