Female Sumatran tigers reach maturity at the age of around three to four years. Males turn mature at the age of around four to five years. Females are pregnant for about 95–110 days, and the females give birth in hidden and private areas and raise the cubs alone. They give birth to around 2-3 cubs at a time, but they can sometimes give birth to six cubs. The cubs’ eyes are closed at birth, and they don’t open fully until the cub is one or two weeks old. Cubs feed on milk for three to six months and start hunting with their mother at the age of about five or six months. They will stay with their mother until they are fully able to hunt on their own, which doesn’t happen until the cubs are at least 18 months to 2 years old. In the wild, Sumatran tigers live an average of 15 years.