The Asian Giant Tortoise is the largest tortoise in Asia, growing up to 61 cm (24 in) in shell length and weighing up to 35 kg (77 lbs.). It is considered to be of one of the oldest tortoise lineages in the world. Native to tropical and subtropical hill forests of Bangladesh, Brunei, India, Indonesia, Malaysia, Myanmar, Singapore (extirpated) and Thailand, the Asian Giant Tortoise is considered Critically Endangered by the International Union for Conservation of Nature (IUCN). Subsistence and commercial hunting and destruction of primary forest habitat are its principal conservation threats. The tortoise plays an important role in maintaining ecosystem health through seed dispersal.