How many baby Formosan rock macaques are in a litter?
A Formosan rock macaque (Macaca cyclopis) usually gives birth to around 1 babies.
Each of those little ones spend around 161 days as a fetus before they are released into the wild. Upon birth, they weight 400 grams (0.88 lbs) and measure 1.2 meter (4′ 0″). They are a member of the Cercopithecidae family (genus: Macaca). An adult Formosan rock macaque grows up to a size of 56 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 Formosan rock macaque (Macaca cyclopis), Formosan rock monkey, or Taiwanese macaque, is a macaque endemic to the island of Taiwan, which has also been introduced to Japan. Besides humans, Formosan rock macaques are the only native primates living in Taiwan. The species was first described by Robert Swinhoe in 1862.
Other animals of the family Cercopithecidae
Formosan rock macaque is a member of the Cercopithecidae, as are these animals:
- Diana monkey with 1 babies per pregnancy
- Pagai Island macaque with 1 babies per pregnancy
- Moor macaque with 1 babies per pregnancy
- Pig-tailed langur with 1 babies per pregnancy
- Proboscis monkey with 1 babies per pregnancy
- Black snub-nosed monkey weighting around 11 kilograms (24.25 lbs)
- Gray snub-nosed monkey with 1 babies per pregnancy
- Red-eared guenon with 1 babies per pregnancy
- Sooty mangabey with 1 babies per pregnancy
- Black-shanked douc with 1 babies per pregnancy
Animals that share a litter size with Formosan rock macaque
Those animals also give birth to 1 babies at once:
- Northern elephant seal
- African pygmy squirrel
- Lowland mosaic-tailed rat
- Rodrigues flying fox
- Wroughton’s free-tailed bat
- Little free-tailed bat
- Kuhl’s pipistrelle
- Pacific white-sided dolphin
- Common minke whale
- Giant golden-crowned flying fox
Animals with the same weight as a Formosan rock macaque
What other animals weight around 5.75 kg (12.69 lbs)?
- Maroon leaf monkey usually reaching 6.37 kgs (14.04 lbs)
- Blue duiker usually reaching 4.86 kgs (10.71 lbs)
- Lar gibbon usually reaching 5.6 kgs (12.35 lbs)
- White-fronted surili usually reaching 6.12 kgs (13.49 lbs)
- Black crested gibbon usually reaching 6.41 kgs (14.13 lbs)
- Allen’s swamp monkey usually reaching 4.75 kgs (10.47 lbs)
- Bush dog usually reaching 6.32 kgs (13.93 lbs)
- Greater naked-tailed armadillo usually reaching 5.35 kgs (11.79 lbs)
- Javan surili usually reaching 6.57 kgs (14.48 lbs)
- Bridled nail-tail wallaby usually reaching 4.95 kgs (10.91 lbs)
Animals with the same size as a Formosan rock macaque
Also reaching around 56 cm (1′ 11″) in size do these animals:
- De Brazza’s monkey gets as big as 51 cm (1′ 9″)
- Allen’s swamp monkey gets as big as 45.9 cm (1′ 7″)
- Meller’s mongoose gets as big as 46 cm (1′ 7″)
- Northern plains gray langur gets as big as 61 cm (2′ 1″)
- Mantled howler gets as big as 57.7 cm (1′ 11″)
- L’Hoest’s monkey gets as big as 51 cm (1′ 9″)
- White-sided jackrabbit gets as big as 48.8 cm (1′ 8″)
- Japanese hare gets as big as 49.9 cm (1′ 8″)
- White-nosed coati gets as big as 55 cm (1′ 10″)
- Grey-cheeked mangabey gets as big as 51.9 cm (1′ 9″)