It is hard to guess what a Kloss’s gibbon weights. But we have the answer:
An adult Kloss’s gibbon (Hylobates klossii) on average weights 5.84 kg (12.87 lbs).
The Kloss’s gibbon is from the family Hylobatidae (genus: Hylobates). When reaching adult age, they grow up to 51.2 cm (1′ 9″). Usually, Kloss’s gibbons 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.
Kloss’s gibbon (Hylobates klossii), also known as the Mentawai gibbon or the bilou, is an endangered primate in the gibbon family, Hylobatidae. It is identifiable in that it is all black, resembling the Siamang with its black fur, but is considerably smaller and lacks the Siamang’s distinctive throat pouch. Kloss’s gibbon reaches a size 44 to 63 cm and weigh at most 6 kg. As is the case for all gibbons, they have long arms and no tail.Kloss’s gibbon exclusively lives on the Mentawai Islands that lie to the west of Sumatra. It is a diurnal inhabitant of the rain forest that hangs in the trees from its long arms and rarely comes to the ground. Like all species of gibbons it lives together in pairs that stake out a territory from approximately 20 to 30 hectares of size. This area is defended vehemently against other gibbons. Its diet consists mainly of fruits, occasionally also eating different plant parts, bird eggs, insects and small vertebrates.The singing of the female Kloss’s gibbon is considered the most beautiful of all the gibbons’ songs. Unlike most other gibbon species (except for the Javan silvery gibbon, Hylobates moloch), Kloss’s gibbon males and females do not sing duets. Males typically sing in the hour before sunrise, while an all-female chorus occurs after sunrise. The singing of the gibbons serves to warn off other animals from their territory, and possibly to strengthen the family bonds.The reproductive cycle of Kloss’s gibbon is similar to that of other gibbons. Every two to three years the female may give birth to a single young (with a gestation period of seven months). The young is weaned in the middle of its second year, and is fully mature in about seven years. Their life expectancy is about 25 years in the wild, and up to 40 years in captivity.
Animals of the same family as a Kloss’s gibbon
We found other animals of the Hylobatidae family:
- Müeller’s gibbon bringing 5.92 kilos (13.05 lbs) to the scale
- Black crested gibbon bringing 6.43 kilos (14.18 lbs) to the scale
- Black crested gibbon bringing 6.41 kilos (14.13 lbs) to the scale
- Northern white-cheeked gibbon bringing 7.32 kilos (16.14 lbs) to the scale
- Hoolock gibbon bringing 6.7 kilos (14.77 lbs) to the scale
- Pileated gibbon bringing 5.57 kilos (12.28 lbs) to the scale
- Agile gibbon bringing 5.85 kilos (12.9 lbs) to the scale
- Northern white-cheeked gibbon bringing 7.32 kilos (16.14 lbs) to the scale
- Hoolock gibbon bringing 6.7 kilos (14.77 lbs) to the scale
- Silvery gibbon bringing 5.87 kilos (12.94 lbs) to the scale
Animals with the same weight as a Kloss’s gibbon
As a comparison, here are some other animals that weight as much as the Hylobates klossii:
- White-striped dorcopsis with a weight of 5.5 kilos (12.13 lbs)
- Sooty mangabey with a weight of 6.94 kilos (15.3 lbs)
- Black-spotted cuscus with a weight of 6 kilos (13.23 lbs)
- Milne-Edwards’s sifaka with a weight of 6.57 kilos (14.48 lbs)
- Gray dorcopsis with a weight of 4.95 kilos (10.91 lbs)
- Brown’s pademelon with a weight of 5.48 kilos (12.08 lbs)
- L’Hoest’s monkey with a weight of 5.31 kilos (11.71 lbs)
- Black crested gibbon with a weight of 6.41 kilos (14.13 lbs)
- Hoolock gibbon with a weight of 6.7 kilos (14.77 lbs)
- Greater mouse-deer with a weight of 5.25 kilos (11.57 lbs)
Animals with the same size as a Kloss’s gibbon
Not that size really matters, but it makes things comparable. So here are a couple of animals that are as big as Kloss’s gibbon:
- Bonnet macaque with a size of 47.5 cm (1′ 7″)
- Owston’s palm civet with a size of 57.2 cm (1′ 11″)
- Neotropical otter with a size of 60.2 cm (2′ 0″)
- Formosan rock macaque with a size of 56 cm (1′ 11″)
- Arctic fox with a size of 56.4 cm (1′ 11″)
- Pennant’s colobus with a size of 56.9 cm (1′ 11″)
- Venezuelan red howler with a size of 56.1 cm (1′ 11″)
- Crested mona monkey with a size of 45.9 cm (1′ 7″)
- Brown’s pademelon with a size of 55 cm (1′ 10″)
- European hare with a size of 52.6 cm (1′ 9″)
Animals with the same litter size as a Kloss’s gibbon
Here is a list of animals that have the same number of babies per litter (1) as a Kloss’s gibbon: