Sunday, July 6, 2008, Toronto, Ontario: Toronto Zoo today announced the passing of Dinding, the Zoo's 50-year-old male orangutan. Dinding had been under treatment for a degenerative disorder for the past 9 months. Following consultation with veterinary and human neurologists, Zoo Veterinary and Animal Care staff made the difficult decision to humanely euthanize Dinding when he recently developed paralysis of his lips and tongue muscles, and had difficulty eating. For the past several months, the orangutan keepers had been caring for Dinding by feeding him a liquefied diet as a result of his inability to chew.
At 50 years of age, Dinding was the third oldest male orangutan in the world at the time of his death. Brought to the Toronto Zoo in 1980, Dinding was an integral contributor to the Zoo's Species Survival Plan (SSP) for the Sumatran orangutan and is the proud father of eight offspring. The SSP is a North American breeding program with the objective of maintaining a healthy captive orangutan population for the future. Dinding has offspring at the Denver Zoo, the St. Louis Zoo and at the Perth Zoo in Australia.
Dinding, whose name in Indonesian means "charm to ward off evil", was known for his gentle and charismatic personality as well as his ability to use a computer and watch TV. Zoo keepers considered him a special member of the orangutan troop who was well respected and a leader. "It's never easy to say good bye to an old friend but he did live an exceptionally long life in comfort: said Jackie Craig, Zoo keeper. "He'll be missed, but we take solace in knowing that he went without pain and with dignity."
Found in the wild only on the islands of Borneo and Sumatra (Indonesia), orangutans typically live no more than 40 years in the wild. As one of the closest relatives to humans, this docile creature lives primarily on fruits, leaves, flowers, bark, and insects. The Sumatran orangutan is considered critically endangered due to habitat destruction caused by palm oil plantations and logging practices. There has been an 80% population decline over the past 75 years, with an estimated population now of less than 7,500 in the wild, scientists predict that the orangutan will become extinct by the year 2012. Through breeding programs like the SSP, the Toronto Zoo is providing important work to maintain a healthy captive population in North America for the next 200 years. The Toronto Zoo also supports various orang-utan conservation projects in the wild through the Toronto Zoo Endangered Species Reserve fund.