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Animal Size

Hoolock gibbon size: How big do they get?

How big does a Hoolock gibbon get? Here is an overview over the average adult age:

A grown Hoolock gibbon (Hylobates hoolock) reaches an average size of 54.7 cm (1′ 10″).

When born, they have an average size of 0 cm (0′ 0″). A full-grown exemplary reaches roughly 6.7 kg (14.77 lbs). A Hoolock gibbon has 1 babies at once. The Hoolock gibbon (genus: Hylobates) is a member of the family Hylobatidae.

As a reference: Humans reach an average body size of 1.65m (5′ 5″) while carrying 62 kg (137 lbs). A human woman is pregnant for 280 days (40 weeks) and on average become 75 years old.

The average adult size of a Hoolock gibbon is (1' 10

The hoolock gibbons are three primate species of genus Hoolock in the gibbon family, Hylobatidae, native to eastern Bangladesh, Northeast India, Myanmar and Southwest China.Hoolocks are the second-largest of the gibbons, after the siamang. They reach a size of 60 to 90 cm and weigh 6 to 9 kg. The sexes are about the same size, but they differ considerably in coloration: males are black-colored with remarkable white brows, while females have a grey-brown fur, which is darker at the chest and neck. White rings around their eyes and mouths give their faces a mask-like appearance. The Oxford English Dictionary says that the name “Hoolock” is from the Assamese হলৌ (holou) or related languages.In northeast India, the hoolock is found south of Brahmaputra as well on the North Bank areas and east of the Dibang Rivers. Its range extends into seven states covering Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland, and Tripura (The seven northeastern states of India).Like the other gibbons, they are diurnal and arboreal, brachiating through the trees with their long arms. They live together in monogamous pairs, which stake out a territory. Their calls serve to locate family members and ward off other gibbons from their territory. Their diet consists mainly of fruits, insects and leaves.Young hoolocks are born after a seven-month gestation, with milky white or buff-colored hair. After about six months, the hair of males will darken and turn black, while the female hair remains buff-colored throughout her life. After eight to 9 years, they are fully mature and their fur reaches its final coloration. Their life expectancy in the wild is about 25 years.

Animals of the same family as a Hoolock gibbon

We found other animals of the Hylobatidae family:

Animals with the same size as a Hoolock gibbon

Not that size really matters, but it makes things comparable. So here are a couple of animals that are as big as Hoolock gibbon:

Animals with the same litter size as a Hoolock gibbon

Here is a list of animals that have the same number of babies per litter (1) as a Hoolock gibbon:

Animals with the same weight as a Hoolock gibbon

As a comparison, here are some other animals that weight as much as the Hylobates hoolock: