Staff members examine the condition of a Sumatran tiger at Dharmasraya Tiger Rehabilitation Center in West Sumatra, Indonesia, July 29, 2019. The Environmental Ministry with Dharmasraya Tiger Rehabilitation Center and ARSARI Foundation released two Sumatran tigers, one female named Bonita and one male named Atan Bintang, on the occasion of Global Tiger Day (also known as International Tiger Day) that falls on July 29. (Photo by Andri Mardiansyah/Xinhua)

A Sumatran tiger is seen in cage before being released at Dharmasraya Tiger Rehabilitation Center in West Sumatra, Indonesia, July 29, 2019. The Environmental Ministry with Dharmasraya Tiger Rehabilitation Center and ARSARI Foundation released two Sumatran tigers, one female named Bonita and one male named Atan Bintang, on the occasion of Global Tiger Day (also known as International Tiger Day) that falls on July 29. (Photo by Andri Mardiansyah/Xinhua)