Cheetah

The carnivore is believed to have gone extinct in India, primarily due to hunting

Study estimates that just 7,100 cheetahs remain in the wild

The cubs, born earlier this month, have weak immune systems and are unable to actively ward off infections

Rapid decline of cheetahs could have been sharper without Marker's high-profile tireless efforts

Sarah was dubbed the fastest cheetah when she ran 100 meters in 5.95 seconds