The primary purpose of this park was to provide protection to the endangered Marco Polo sheep, which is only found in this area in Pakistan. According to the Mir of Hunza, the population of sheep was around 400 but had dropped to below 180 by the time of the completion of the Karakoram Highway. A herd of almost 75 Marco Polo sheep was recorded in the spring of 1984 and park staff saw at least 50 crossing the pass in May 1989.
The park is also famous for its snow leopards. Some reports say that it might contain the highest density of these beautiful cats in the total Himalayan ecosystem, which is the natural habitat of these cats.
This park have following species