Home Newsroom News Archive News Archive Skip filter form Search Term Sort by RelevanceDate Filter By By Animal - + Alpaca Andean bear Asian elephant Asian small-clawed otter Bald eagle Beaver Black-and-white ruffed lemur Black-crowned night heron Black-footed ferret Bobcat Brown pelican California sea lion Cheetah Clouded leopard Cow Cuban crocodile Dama gazelle Eastern red-backed salamander Electric eel Fishing cat Giant panda Golden-headed lion tamarin Gray seal Gray wolf Guam rail (ko’ko’) Harbor seal King vulture Lion Maned wolf North American river otter North Island brown kiwi Norway rat Orangutan Panamanian golden frog Persian onager Prehensile-tailed porcupine Przewalski's horse Red-fronted lemur Red panda Ring-tailed lemur Scimitar-horned oryx Screaming hairy armadillo Sloth bear Tiger Western lowland gorilla (-) White-cheeked gibbon No result By Year - + 2020 2018 (-) 2017 Displaying 1 - 1 of 1 articles. October 17, 2017 White-cheeked Gibbon Euthanized at the Smithsonian’s National Zoo Tuyen, a 10-year-old female white-cheeked gibbon at the Smithsonian’s National Zoo, was humanely euthanized Oct. 12, after suffering from progressive neurologic disease and acute seizures.