A 14-year-old male patas monkey at Woodland Park Zoo was euthanized after a sudden decline in health due to congestive heart failure.
The monkey, named T.C., came to the zoo's award-winning African Savanna exhibit in 2001 from Honolulu Zoo. Two female patas monkeys, Alexa and Fiona, remain in the African Savanna exhibit.
Meanwhile, Fiona, who received high-tech treatment earlier in July to relieve pain caused by kidney stones, continues to recover well from the procedure. The kidney stones were blasted to small pieces using sound waves, and were easily passed through her urinary tract.
Patas monkeys can live 15 to 20 years in the wild. In zoos, however, patas monkeys can live more than 20 years.
"The degree of heart failure was severe and the quality of this monkey's life was compromised, so we made the humane decision to euthanize him," explained zoo Interim Director of Animal Health Dr. Kelly Helmick.
The initial postmortem exam findings support severe congestive heart failure but final histology findings are pending.
Patas monkeys, native to Africa, are primarily ground-dwelling primates and are often found in open bush and grass savanna regions. Their long, slender arms and legs enable them to run up to 35 miles per hour. When required, a patas can go from 0 to 33 miles per hour in 3 seconds.
Patas monkeys are frequently hunted for meat and are sometimes considered pests because they raid crops. Heavy cattle grazing and the conversion of savanna areas into farmland have reduced available habitat. In some instances, deforestation has converted once humid areas into drier savanna zones, which actually increases suitable habitat for patas monkeys.