A Royal Bengal Tiger rests at the Central Zoo of Jawalakhel in Kathmandu, Nepal, July 29, 2018, the International Tiger Day. (Photo: Xinhua/Sunil Sharma) 

A Royal Bengal Tiger roams at the Central Zoo of Jawalakhel in Kathmandu, Nepal, July 29, 2018, the International Tiger Day. 

A Royal Bengal Tiger roams at the Central Zoo of Jawalakhel in Kathmandu, Nepal, July 29, 2018, the International Tiger Day.

A man holds a placard at the Central Zoo of Jawalakhel in Kathmandu, Nepal, July 29, 2018, the International Tiger Day.