Asian Giant Tortoise

AT A GLANCE
Common Name: Asian Giant Tortoise
Scientific Name: Manouria emys
Category: Reptiles
Subcategory: Tortoises
Size: Carapace length 50 to 60 cm (20 to 24 in); maximum recorded up to 68 cm (27 in)
Weight: 25 to 37 kg (55 to 82 lb; the largest tortoise on the Asian continent)
Lifespan: 60 to 100+ years
Diet: Herbivorous folivore / Frugivore (wild rainforest fruits, bamboo shoots, succulent tubers, leaves, and fungi)
Habitat: Dense tropical evergreen rainforests, moist bamboo groves, and cloud forest slopes
Range: Southeast Asia and Sundaland
Conservation Status: Critically Endangered (IUCN Red List)

Overview

The Asian Giant Tortoise (Manouria emys), also celebrated as the Mountain Tortoise or Burmese Mountain Tortoise, is the largest living tortoise on the Asian continent. Regarded as one of the most primitive tortoises alive today, this gentle, moss-loving giant is unique in the entire chelonian world: it is the only tortoise known to construct an elaborate above-ground mound nest of leaves and fiercely guard her eggs against predators.

Biology and Physical Characteristics

Manouria emys has a massive, broad, flattened carapace colored dark chocolate-brown to jet-black, accented by large, flared marginal scutes and heavily scaled, pillar-like legs armored with conical pointed spurs. Its limbs and skin are dark greyish-black. Adapted to cool, wet mountain rainforests rather than arid deserts, it possesses a deep affinity for soaking in clear jungle streams.

Behavior and Ecology

Unlike all other tortoises that simply dig a hole in the dirt, female Asian Giant Tortoises exhibit extraordinary maternal architecture: a mother gathers enormous quantities of fallen rainforest leaves with her front legs to sweep together a monumental mound nest up to a meter high, lays up to 50 eggs inside, and aggressively defends the mound against wild pigs and monitor lizards for days.

Conservation and Human Impact

Classified as Critically Endangered by the IUCN, Manouria emys has suffered precipitous declines due to relentless commercial hunting for bushmeat, illegal collection for traditional Chinese medicine, and catastrophic loss of primary rainforest to oil palm and rubber monoculture across Southeast Asia.

Interesting Factoid

The Asian Giant Tortoise is the only tortoise in the world that builds a massive above-ground leaf nest and stands guard over her eggs like a mama bird, hissing and charging at any wild boar that comes near.