NEW YORK — Happy, an Asian elephant at the Bronx Zoo that contributed to groundbreaking research on animal self-awareness, was euthanized Tuesday after developing serious health complications, zoo officials announced Wednesday. She was 55.
The Bronx Zoo said Happy showed signs of kidney or liver failure after age-related conditions worsened in recent weeks. A necropsy later revealed arthritis and a large inoperable tumor.
Craig Piper, the zoo’s interim director, said Happy played an important role in elephant conservation and public education.
Happy was born in the wild in Asia before arriving in the United States in 1977. The zoo named her after one of the dwarfs from Snow White and the Seven Dwarfs. She arrived at the zoo alongside another elephant named Grumpy.
Zoo officials said Happy was known for responding well to training and enrichment activities. Over the years, several elephants in her social group died, including Grumpy in 2002 following a confrontation with other elephants, another companion in 2006, and an additional elephant in 2018.
The Bronx Zoo maintained that Happy received appropriate care and that relocating her late in life could have negatively affected her health. Animal rights groups, however, had criticized the keeping of elephants in urban zoos and argued that elephants require larger habitats.
Happy gained international attention in 2005 after researchers concluded she demonstrated self-recognition in a mirror test. During the study, she repeatedly touched a visible mark placed on her forehead while looking into a mirror, behavior researchers interpreted as evidence of self-awareness.
The study identified behaviors associated with mirror self-recognition, including examining the mirror, looking behind it, and directing attention toward her own body. Researchers said such behavior had previously been documented mainly in humans, great apes, and dolphins.
