SINGAPORE, July 12, 2016 (Xinhua) -- Tree kangaroo Makaia receives a health examination under sedation at the Singapore Zoo, on July 12, 2016. Makaia, the first successfully raised tree kangaroo by a surrogate wallaby mother from Australia's Adelaide Zoo, underwent a health examination during quarantine after arriving at the Singapore Zoo on July 4. (Xinhua/Then Chih Wey)