How many baby Tonkin snub-nosed monkeys are in a litter?
A Tonkin snub-nosed monkey (Pygathrix avunculus) usually gives birth to around 1 babies.
Each of those little ones spend around 199 days as a fetus before they are released into the wild. Upon birth, they weight 410 grams (0.9 lbs) and measure 15 cm (0′ 6″). They are a member of the Cercopithecidae family (genus: Pygathrix). An adult Tonkin snub-nosed monkey grows up to a size of 56.9 cm (1′ 11″).
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 Tonkin snub-nosed monkey or Dollman’s snub-nosed monkey (Rhinopithecus avunculus) is a slender-bodied arboreal Old World monkey, endemic to northern Vietnam. It is a black and white monkey with a pink nose and lips and blue patches around the eyes. It is found at altitudes of 200 to 1,200 m (700 to 3,900 ft) on fragmentary patches of forest on craggy limestone areas. First described in 1912, the monkey was rediscovered in 1990 but is exceedingly rare. In 2008, fewer than 250 individuals were thought to exist, and the species was the subject of intense conservation effort. The main threats faced by these monkeys are habitat loss and hunting, and the International Union for Conservation of Nature has rated the species as “critically endangered”.
Other animals of the family Cercopithecidae
Tonkin snub-nosed monkey is a member of the Cercopithecidae, as are these animals:
- Preuss’s monkey with 1 babies per pregnancy
- De Brazza’s monkey with 1 babies per pregnancy
- Olive baboon with 1 babies per pregnancy
- Lesser spot-nosed monkey with 1 babies per pregnancy
- Campbell’s mona monkey with 1 babies per pregnancy
- Black crested mangabey becoming 26.75 years old
- Sooty mangabey with 1 babies per pregnancy
- White-throated guenon with 1 babies per pregnancy
- Pig-tailed langur with 1 babies per pregnancy
- Moustached guenon with 1 babies per pregnancy
Animals that share a litter size with Tonkin snub-nosed monkey
Those animals also give birth to 1 babies at once:
- Hildebrandt’s horseshoe bat
- Preuss’s red colobus
- Pig-tailed langur
- Great fruit-eating bat
- Ground cuscus
- White-faced spiny tree-rat
- Diadem leaf-nosed bat
- Blue monkey
- Black duiker
- Purple-faced langur
Animals with the same weight as a Tonkin snub-nosed monkey
What other animals weight around 9.12 kg (20.11 lbs)?
- Lowland paca usually reaching 8.17 kgs (18.01 lbs)
- Short-eared dog usually reaching 8.36 kgs (18.43 lbs)
- Western red colobus usually reaching 8.43 kgs (18.58 lbs)
- Large Indian civet usually reaching 9.15 kgs (20.17 lbs)
- Mountain paca usually reaching 9 kgs (19.84 lbs)
- Goodfellow’s tree-kangaroo usually reaching 7.98 kgs (17.59 lbs)
- Lowland paca usually reaching 8.18 kgs (18.03 lbs)
- Southern muriqui usually reaching 10.57 kgs (23.3 lbs)
- Black colobus usually reaching 9.1 kgs (20.06 lbs)
- Red-shanked douc usually reaching 9.48 kgs (20.9 lbs)
Animals with the same size as a Tonkin snub-nosed monkey
Also reaching around 56.9 cm (1′ 11″) in size do these animals:
- Brown’s pademelon gets as big as 55 cm (1′ 10″)
- Owston’s palm civet gets as big as 57.2 cm (1′ 11″)
- Southern river otter gets as big as 59 cm (2′ 0″)
- Bush dog gets as big as 62.6 cm (2′ 1″)
- Andean mountain cat gets as big as 60.2 cm (2′ 0″)
- Patas monkey gets as big as 66.5 cm (2′ 3″)
- Plains viscacha gets as big as 52.4 cm (1′ 9″)
- Aquatic genet gets as big as 45.8 cm (1′ 7″)
- Black howler gets as big as 55.9 cm (1′ 11″)
- South American gray fox gets as big as 51.9 cm (1′ 9″)