It is hard to guess what a Calabar angwantibo weights. But we have the answer:
An adult Calabar angwantibo (Arctocebus calabarensis) on average weights 258 grams (0.57 lbs).
The Calabar angwantibo is from the family Loridae (genus: Arctocebus). It is usually born with about 31 grams (0.07 lbs). They can live for up to 13 years. When reaching adult age, they grow up to 24 cm (0′ 10″). Usually, Calabar angwantibos 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 Calabar angwantibo (Arctocebus calabarensis), also known as the Calabar potto, is a strepsirrhine primate of the family Lorisidae. It shares the genus Arctocebus with the golden angwantibo (Arctocebus aureus). It is closely related to the potto (Perodicticus potto) and to the various lorises.The Calabar angwantibo lives in the rain forests of west Africa, particularly in tree-fall zones. In areas where the forest has been cleared, it has been known to live on farmland. Its range covers Cameroon, Nigeria and Equatorial Guinea. The species takes its name from the Nigerian city of Calabar.The Calabar angwantibo weighs between 266 and 465 grams. It has orangish-yellow fur on its back, grey or white fur on its belly, and a distinctive white line on its forehead and nose. Like other lorids, this angwantibo has a very short index finger, which allows it to get a strong grip on tree branches. The second toe on each foot has a specialised claw that the angwantibo uses for grooming. The Calabar angwantibo is the only primate to have a functioning nictitating membrane (third eyelid).The Calabar angwantibo is nocturnal and arboreal. It stays considerably lower in the trees than the other nocturnal strepsirrhines in its range, and is typically found between 5 and 15 metres above ground. It moves by climbing very slowly through the trees, always grasping branches with at least three of its limbs at a time. During the day the angwantibo sleeps under dense foliage, hanging from a branch.The Calabar angwantibo’s diet consists mainly of insects, especially caterpillars, but it also eats some fruit. It will eat strong-smelling insects that other animals reject. Before eating a caterpillar, the angwantibo wipes it carefully with its hands to remove any poisonous barbs.When confronted by a predator, the Calabar angwantibo will roll up into a ball, but keep its mouth open beneath its armpit. If the attacker persists, the angwantibo will bite it and not let go.Calabar angwantibos forage for food alone, but each male’s territory overlaps that of several females. Angwantibos reinforce social bonds through mutual grooming and scent-marking. Mating takes place only in the final phase of the female’s estrous cycle, and is performed hanging upside-down from a branch. The female gives birth to a single infant after a gestation period of 131 to 136 days; the young are normally born between January and April. Infants are born with their eyes open and can cling to their mother’s fur right away.
Animals of the same family as a Calabar angwantibo
We found other animals of the Loridae family:
- Golden angwantibo with a weight of 235 grams
- Potto bringing 1.08 kilos (2.38 lbs) to the scale
- Red slender loris with a weight of 249 grams
- Sunda slow loris with a weight of 940 grams
- Pygmy slow loris with a weight of 343 grams
Animals with the same weight as a Calabar angwantibo
As a comparison, here are some other animals that weight as much as the Arctocebus calabarensis:
- Smith’s bush squirrel bringing 222 grams to the scale
- Short-tailed spiny rat bringing 284 grams to the scale
- Carruther’s mountain squirrel bringing 277 grams to the scale
- Afghan pika bringing 250 grams to the scale
- Common marmoset bringing 291 grams to the scale
- Aldabra flying fox bringing 309 grams to the scale
- Brandt’s hedgehog bringing 213 grams to the scale
- Speckled spiny tree-rat bringing 283 grams to the scale
- Pallas’s squirrel bringing 283 grams to the scale
- O’Connell’s spiny rat bringing 284 grams to the scale
Animals with the same size as a Calabar angwantibo
Not that size really matters, but it makes things comparable. So here are a couple of animals that are as big as Calabar angwantibo:
- Bougainville monkey-faced bat with a size of 26.2 cm (0′ 11″)
- Red-handed tamarin with a size of 26.5 cm (0′ 11″)
- Bioko Allen’s bushbaby with a size of 20 cm (0′ 8″)
- Large mosaic-tailed rat with a size of 20.4 cm (0′ 9″)
- Eastern gray squirrel with a size of 25.4 cm (0′ 10″)
- Coquerel’s giant mouse lemur with a size of 23.1 cm (0′ 10″)
- Smoky flying squirrel with a size of 22.9 cm (0′ 10″)
- Bulmer’s fruit bat with a size of 24.5 cm (0′ 10″)
- Short-footed Luzon tree rat with a size of 20 cm (0′ 8″)
- Philippine tree squirrel with a size of 21 cm (0′ 9″)
Animals with the same litter size as a Calabar angwantibo
Here is a list of animals that have the same number of babies per litter (1) as a Calabar angwantibo:
- Black-tailed hutia
- Guanaco
- Black-capped squirrel monkey
- Bechstein’s bat
- Tana River red colobus
- Tufted deer
- Ringed seal
- Franquet’s epauletted fruit bat
- Horse
- Père David’s vole
Animals with the same life expectancy as a Calabar angwantibo
Completely different animals, but becoming as old as a Calabar angwantibo:
- Arctic fox with an average maximal age of 15 years
- Cape grysbok with an average maximal age of 14 years
- California myotis with an average maximal age of 15 years
- Menzbier’s marmot with an average maximal age of 15 years
- Mindanao treeshrew with an average maximal age of 11.5 years
- Swamp wallaby with an average maximal age of 15 years
- Rhim gazelle with an average maximal age of 14 years
- European polecat with an average maximal age of 14 years
- Northern flying squirrel with an average maximal age of 13 years
- Cape ground squirrel with an average maximal age of 13 years