Two seven-month-old Sri Lankan Leopard cubs at Burgers' Zoo in the Netherlands showed off their climbing skills on a new video released by the zoo. The cubs' antics were captured by a Go-Pro camera mounted at the top of the rope.

You last saw the cubs, a male and a female, playing with their mother in the maternity den last summer.  

The playful duo are an important part of efforts to protect this rare Leopard subspecies, which is classified as Endangered by the International Union for Conservation of Nature (IUCN).  Sri Lankan Leopards are one of nine Leopard subspecies and are found only on the island of Sri Lanka, which lies off the eastern coast of India. 

Burgers' Zoo has a successful history of breeding Sri Lankan Leopards, and the offspring produced here help to maintain a genetically diverse population within European zoos.