Two Critically Endangered Malayan Tiger cubs at the Prague Zoo are beginning to show their personalities.

The cubs – one male and one female – were born on October 3 and only recently came out of the den with their mother, Banya. The animal care team chose the name Bulan for the male and Wanita for the female.

Photo Credit: Prague Zoo

From the start, Wanita was smaller than her brother. She experienced some health problems shortly after birth and has since recovered completely, but Wanita has yet to catch up with her brother’s growth.

Bulan currently weighs 17.5 pounds, and Wanita weighs 13.1 pounds. But keepers say that Wanita makes up for her smaller size with a big personality. Feisty little Wanita is not afraid of anything, while Bulan is more timid. Plus, Wanita has figured out how to roar properly!

Both cubs are healthy and active, and have begun tasting bits of meat in addition to nursing from Banya. They are hugely important to the global effort to save this rare Cat species from extinction. Experts say only 250-340 Malayan Tigers remain in the wild – a precariously low number – and only about 200 are of breeding age. They inhabit only the Malay peninsula in Southeast Asia.

Fragmentation of habitat is a major threat to Malayan Tigers, as is illegal poaching for use of body parts in traditional Asian medicine.

See more photos of Wanita and Bulan below.