Category: World / November 16, 2012 11:37 AM EST
Medan zoo in northern Sumatra is celebrating its latest addition of three critically endangered Sumatran tiger cubs.
The babies, two males named Jai and Erha and one female, Suci, have not yet being shown to the public.
The 13-year-old Sumatran tiger named Manis, which means "Sweet" in English, gave birth to the cubs on October 18, around a year after she gave birth to three males.
The father was a 14-year old tiger called Anhar.
The birth of the babies brings the total number of Sumatran tigers in the zoo to nine, six cubs, two males and one female.
"The tigress gave birth to three cubs on October 18, so they are now almost one month old," Sucitrawan, a zoo veterinarian at Medan zoo, told journalists.
Environmental group WWF said habitat destruction has pushed Sumatran tigers or Panthera Tigris Sumatrae to the brink of extinction, with just 400 left in Indonesia from a worldwide tiger population of 3,200.
"Manis, a female tiger and her partner, Anhar, are the parents. This is the third time she has given birth and it was all done in the natural way with no special treatment," Sucitrawan added.
The organisation says deforestation has endangered animals like the Sumatran tiger and Javan rhino, and pushed up carbon dioxide emissions. The Bali and the Java tigers have died out over the last 70 years.