Bronx Zoo Elephant Who Helped Scientists Study Animal Self-Awareness Dies at 55

An elephant at the Bronx Zoo who helped scientists better understand animal behavior and became the focus of a prominent animal rights lawsuit has died at age 55.

Happy was put down after contributing to important research that gave scientists new understanding of how elephants behave. The elephant also became central to a widely followed legal case involving animal rights.

The elephant’s death marks the end of a life that significantly advanced scientific knowledge about animal self-awareness and cognition.