How many baby Siamangs are in a litter?
A Siamang (Hylobates syndactylus) usually gives birth to around 1 babies.
Each of those little ones spend around 230 days as a fetus before they are released into the wild. Upon birth, they weight 517 grams (1.14 lbs) and measure 8.5 cm (0′ 4″). They are a member of the Hylobatidae family (genus: Hylobates). An adult Siamang grows up to a size of 82.4 cm (2′ 9″).
To have a reference: Humans obviously usually have a litter size of one ;). Their babies are in the womb of their mother for 280 days (40 weeks) and reach an average size of 1.65m (5′ 5″). They weight in at 62 kg (137 lbs), which is obviously highly individual, and reach an average age of 75 years.
The siamang (Symphalangus syndactylus) is an arboreal black-furred gibbon native to the forests of Indonesia, Malaysia and Thailand. The largest of the gibbons, the siamang can be twice the size of other gibbons, reaching 1 m in height, and weighing up to 14 kg. The siamang is the only species in the genus Symphalangus.Two features distinguish the siamang from other gibbons. The first is that two digits on each foot—the second and third toes—are partially joined by a membrane—hence the name “syndactylus”, from the Ancient Greek sun-, “united” + daktulos, “finger”. The second is the large gular sac (found in both males and females of the species), which is a throat pouch which can be inflated to the size of the siamang’s head, allowing it to make loud, resonating calls or songs.Two subspecies of the siamang may exist. If so, they are the nominate Sumatran siamang (S. s. syndactylus) and the Malaysian siamang (S. s. continentis, in peninsular Malaysia). Otherwise, the Malaysian individuals are only a population. The siamang occurs sympatrically with other gibbons; its two ranges are entirely within the combined ranges of the agile gibbon and the lar gibbon.The siamang can live to around 40 years in captivity.While the illegal pet trade takes a toll on wild populations, the principal threat to the siamang is habitat loss in both Indonesia and Malaysia. The palm oil production industry is clearing large swaths of forest, reducing the habitat of the siamang, along with that of other species, such as the Sumatran tiger.
Other animals of the family Hylobatidae
Siamang is a member of the Hylobatidae, as are these animals:
- Black crested gibbon with 1 babies per pregnancy
- Pileated gibbon with 1 babies per pregnancy
- Northern white-cheeked gibbon weighting around 7.32 kilograms (16.14 lbs)
- Kloss’s gibbon with 1 babies per pregnancy
- Siamang with 1 babies per pregnancy
- Silvery gibbon with 1 babies per pregnancy
- Lar gibbon with 1 babies per pregnancy
- Müeller’s gibbon with 1 babies per pregnancy
- Agile gibbon with 1 babies per pregnancy
- Hoolock gibbon with 1 babies per pregnancy
Animals that share a litter size with Siamang
Those animals also give birth to 1 babies at once:
- Red-bellied lemur
- Bearded seal
- Melanomys caliginosus
- Gulf Coast kangaroo rat
- Sitatunga
- Northern bettong
- Sinaloan mastiff bat
- Short-footed Luzon tree rat
- Nilgai
- Argali
Animals that get as old as a Siamang
Other animals that usually reach the age of 38 years:
- Southern pig-tailed macaque with 34.25 years
- Bactrian camel with 40 years
- Anoa with 36 years
- American bison with 33 years
- Rough-toothed dolphin with 32 years
- Burchell’s zebra with 40 years
- Lar gibbon with 40 years
- American black bear with 32 years
- Bowhead whale with 40 years
- Drill (animal) with 33.33 years
Animals with the same weight as a Siamang
What other animals weight around 10.9 kg (24.03 lbs)?
- Tonkin snub-nosed monkey usually reaching 9.12 kgs (20.11 lbs)
- Sharpe’s grysbok usually reaching 9.37 kgs (20.66 lbs)
- Dingiso usually reaching 9.4 kgs (20.72 lbs)
- Honey badger usually reaching 9 kgs (19.84 lbs)
- Pennant’s colobus usually reaching 10.9 kgs (24.03 lbs)
- Black-headed spider monkey usually reaching 9.07 kgs (20 lbs)
- Siamang usually reaching 10.84 kgs (23.9 lbs)
- Barbary macaque usually reaching 11.49 kgs (25.33 lbs)
- Cape grysbok usually reaching 10.47 kgs (23.08 lbs)
- Stump-tailed macaque usually reaching 9.38 kgs (20.68 lbs)
Animals with the same size as a Siamang
Also reaching around 82.4 cm (2′ 9″) in size do these animals:
- Short-eared dog gets as big as 83.3 cm (2′ 9″)
- Hamadryas baboon gets as big as 67.5 cm (2′ 3″)
- Jungle cat gets as big as 70.6 cm (2′ 4″)
- Southern hairy-nosed wombat gets as big as 85.5 cm (2′ 10″)
- North American beaver gets as big as 75.7 cm (2′ 6″)
- European badger gets as big as 70.7 cm (2′ 4″)
- Bornean orangutan gets as big as 89 cm (3′ 0″)
- Maxwell’s duiker gets as big as 84.6 cm (2′ 10″)
- Goa (antelope) gets as big as 98 cm (3′ 3″)
- Dingiso gets as big as 67.4 cm (2′ 3″)