It is hard to guess what a Proboscis monkey weights. But we have the answer:
An adult Proboscis monkey (Nasalis larvatus) on average weights 12.28 kg (27.08 lbs).
The Proboscis monkey is from the family Cercopithecidae (genus: Nasalis). It is usually born with about 450 grams (0.99 lbs). They can live for up to 21 years. When reaching adult age, they grow up to 64.7 cm (2′ 2″). Usually, Proboscis monkeys have 1 babies per litter.
As a reference: An average human weights in at 62 kg (137 lbs) and reaches an average size of 1.65m (5′ 5″). Humans spend 280 days (40 weeks) in the womb of their mother and reach around 75 years of age.
The proboscis monkey (Nasalis larvatus) or long-nosed monkey, known as the bekantan in Indonesia, is an arboreal Old World monkey with an unusually large nose, a reddish-brown skin color and a long tail. It is endemic to the southeast Asian island of Borneo and is found mostly in mangrove forests and on the coastal areas of the island.This species co-exists with the Bornean orangutan. It belongs in the monotypic genus Nasalis.
Animals of the same family as a Proboscis monkey
We found other animals of the Cercopithecidae family:
- Toque macaque bringing 4.66 kilos (10.27 lbs) to the scale
- Preuss’s monkey bringing 5.14 kilos (11.33 lbs) to the scale
- Golden snub-nosed monkey bringing 13.46 kilos (29.67 lbs) to the scale
- Agile mangabey bringing 7.11 kilos (15.67 lbs) to the scale
- Tana River red colobus bringing 8.03 kilos (17.7 lbs) to the scale
- Stump-tailed macaque bringing 9.38 kilos (20.68 lbs) to the scale
- Black crested mangabey bringing 6.51 kilos (14.35 lbs) to the scale
- De Brazza’s monkey bringing 5.32 kilos (11.73 lbs) to the scale
- Assam macaque bringing 8.55 kilos (18.85 lbs) to the scale
- Zanzibar red colobus bringing 7.16 kilos (15.79 lbs) to the scale
Animals with the same weight as a Proboscis monkey
As a comparison, here are some other animals that weight as much as the Nasalis larvatus:
- Pygathrix bieti with a weight of 11 kilos (24.25 lbs)
- Tenkile with a weight of 9.98 kilos (22 lbs)
- Mantled guereza with a weight of 9.96 kilos (21.96 lbs)
- Black-shanked douc with a weight of 10.33 kilos (22.77 lbs)
- Marine otter with a weight of 11.2 kilos (24.69 lbs)
- Sulawesi bear cuscus with a weight of 10 kilos (22.05 lbs)
- Ethiopian wolf with a weight of 14.38 kilos (31.7 lbs)
- Serval with a weight of 11.9 kilos (26.23 lbs)
- Barbary macaque with a weight of 11.49 kilos (25.33 lbs)
- Water chevrotain with a weight of 10.83 kilos (23.88 lbs)
Animals with the same size as a Proboscis monkey
Not that size really matters, but it makes things comparable. So here are a couple of animals that are as big as Proboscis monkey:
- Side-striped jackal with a size of 74.7 cm (2′ 6″)
- Sechuran fox with a size of 56.2 cm (1′ 11″)
- Hoolock gibbon with a size of 54.7 cm (1′ 10″)
- Doria’s tree-kangaroo with a size of 60.4 cm (2′ 0″)
- Grivet with a size of 56 cm (1′ 11″)
- Jaguarundi with a size of 70.4 cm (2′ 4″)
- Dusky leaf monkey with a size of 54.9 cm (1′ 10″)
- Tana River red colobus with a size of 56 cm (1′ 11″)
- Venezuelan red howler with a size of 56.1 cm (1′ 11″)
- Antelope jackrabbit with a size of 54.6 cm (1′ 10″)
Animals with the same litter size as a Proboscis monkey
Here is a list of animals that have the same number of babies per litter (1) as a Proboscis monkey:
- Guinea baboon
- Burchell’s zebra
- Puku
- Mount Kenya mole shrew
- Taiwan vole
- New Britain naked-backed fruit bat
- Black-eared flying fox
- De Vis’s woolly rat
- Gray whale
- Alpaca
Animals with the same life expectancy as a Proboscis monkey
Completely different animals, but becoming as old as a Proboscis monkey:
- Raccoon with an average maximal age of 20.83 years
- Northern greater galago with an average maximal age of 17 years
- Indiana bat with an average maximal age of 20 years
- Sumatran serow with an average maximal age of 21 years
- Townsend’s big-eared bat with an average maximal age of 21.17 years
- Dorcas gazelle with an average maximal age of 17.42 years
- Commerson’s dolphin with an average maximal age of 18 years
- Thorold’s deer with an average maximal age of 18 years
- Lesser mouse-eared bat with an average maximal age of 19.75 years
- Platypus with an average maximal age of 22 years