How many baby Robinson’s mouse opossums are in a litter?
A Robinson’s mouse opossum (Marmosa robinsoni) usually gives birth to around 9 babies.With 1 litters per year, that sums up to a yearly offspring of 9 babies.
Each of those little ones spend around 13 days as a fetus before they are released into the wild. Upon birth, they weight 110 grams (0.24 lbs) and measure 13.3 cm (0′ 6″). They are a member of the Didelphidae family (genus: Marmosa). An adult Robinson’s mouse opossum grows up to a size of 15 cm (0′ 6″).
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.
Robinson’s mouse opossum (Marmosa robinsoni) is a species of opossum in the family Didelphidae. It is found in Belize, Colombia, Ecuador, Grenada, Honduras, Panama, Peru, Trinidad and Tobago, and Venezuela.Despite resembling certain primates, it is related to opossums.Robinson’s mouse opossums move along tree branches and vines with the help of a prehensile tail and may leap between gaps as they search for fruit and insects.
Other animals of the family Didelphidae
Robinson’s mouse opossum is a member of the Didelphidae, as are these animals:
- White-eared opossum with 6 babies per pregnancy
- White-bellied woolly mouse opossum with 8 babies per pregnancy
- Big-eared opossum with 6 babies per pregnancy
- Mexican mouse opossum with 11 babies per pregnancy
- Grayish mouse opossum with 8 babies per pregnancy
- Emilia’s short-tailed opossum weighting only 52 grams
- Tate’s woolly mouse opossum with 5 babies per pregnancy
- Brazilian slender opossum weighting only 38 grams
- Agile gracile opossum with 12 babies per pregnancy
- Guajira mouse opossum weighting only 46 grams
Animals that share a litter size with Robinson’s mouse opossum
Those animals also give birth to 9 babies at once:
- Steppe polecat
- Sikkim rat
- Ciscaucasian hamster
- Ricefield rat
- Texas antelope squirrel
- Turkish hamster
- Franklin’s ground squirrel
Animals that get as old as a Robinson’s mouse opossum
Other animals that usually reach the age of 2 years:
- Common yellow-toothed cavy with 1.75 years
- Mediterranean water shrew with 2 years
- Panamanian spiny pocket mouse with 1.75 years
- Aegialomys galapagoensis with 1.67 years
- Cinnamon antechinus with 2 years
- Honey possum with 2 years
- Campbell’s dwarf hamster with 1.75 years
- Ningbing false antechinus with 2 years
- Common shrew with 2 years
- Fawn antechinus with 2.25 years
Animals with the same weight as a Robinson’s mouse opossum
What other animals weight around 61 grams (0.13 lbs)?
- Oecomys speciosus weighting 73 grams
- Striped Atlantic Forest rat weighting 67 grams
- Spectacled dormouse weighting 68 grams
- Transandinomys bolivaris weighting 60 grams
- Yellow-rumped leaf-eared mouse weighting 53 grams
- Greater nectar bat weighting 72 grams
- Hylaeamys laticeps weighting 49 grams
- Broad-striped dasyure weighting 54 grams
- Euryoryzomys lamia weighting 60 grams
- Boehm’s bush squirrel weighting 70 grams
Animals with the same size as a Robinson’s mouse opossum
Also reaching around 15 cm (0′ 6″) in size do these animals:
- Hylaeamys megacephalus gets as big as 12.2 cm (0′ 5″)
- Broad-striped dasyure gets as big as 12.9 cm (0′ 6″)
- Lesser hamster-rat gets as big as 14.9 cm (0′ 6″)
- Coxing’s white-bellied rat gets as big as 13 cm (0′ 6″)
- Daurian pika gets as big as 18 cm (0′ 8″)
- Himalayan mole gets as big as 12.2 cm (0′ 5″)
- Goliath shrew gets as big as 14.7 cm (0′ 6″)
- Nelson’s spiny pocket mouse gets as big as 15.8 cm (0′ 7″)
- Gregarious short-tailed rat gets as big as 16.2 cm (0′ 7″)
- Yellow-spotted brush-furred rat gets as big as 12.2 cm (0′ 5″)