How many baby New Holland mouses are in a litter?
A New Holland mouse (Pseudomys novaehollandiae) usually gives birth to around 4 babies.With 4 litters per year, that sums up to a yearly offspring of 16 babies.
Each of those little ones spend around 31 days as a fetus before they are released into the wild. Upon birth, they weight 1 grams (0 lbs) and measure 19.1 cm (0′ 8″). They are a member of the Muridae family (genus: Pseudomys). An adult New Holland mouse grows up to a size of 8.2 cm (0′ 4″).
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 New Holland mouse (Pseudomys novaehollandiae) is a species of rodent in the family Muridae. It was first described by George Waterhouse in 1843. It vanished from view for over a century before its rediscovery in Ku-ring-gai Chase National Park north of Sydney in 1967. It is found only in south east Australia, within the states of New South Wales, Queensland, Victoria, and Tasmania.
Other animals of the family Muridae
New Holland mouse is a member of the Muridae, as are these animals:
- Melanomys robustulus weighting only 53 grams
- Stella wood mouse with 3 babies per pregnancy
- Luzon montane forest mouse weighting only 34 grams
- Togo mouse weighting only 55 grams
- Nikolaus’s mouse weighting only 52 grams
- Savanna gerbil with 3 babies per pregnancy
- Osgood’s leaf-eared mouse weighting only 45 grams
- Oligoryzomys destructor weighting only 25 grams
- Allen’s cotton rat weighting only 174 grams
- Pallid Atlantic Forest rat weighting only 90 grams
Animals that share a litter size with New Holland mouse
Those animals also give birth to 4 babies at once:
- Giant forest hog
- Akodon boliviensis
- Caucasian squirrel
- Camas pocket gopher
- Bennett’s chinchilla rat
- Sand cat
- Bank vole
- Groundhog
- Red-tailed chipmunk
- Red-cheeked dunnart
Animals with the same weight as a New Holland mouse
What other animals weight around 16 grams (0.04 lbs)?
- Pale kangaroo mouse weighting 13 grams
- Tickell’s bat weighting 16 grams
- Ussuri shrew weighting 15 grams
- Eptesicus demissus weighting 13 grams
- Shrew-toothed shrew tenrec weighting 18 grams
- Spotted bat weighting 16 grams
- Western red-backed vole weighting 18 grams
- Mexican harvest mouse weighting 15 grams
- Spotted free-tailed bat weighting 15 grams
- Fischer’s pygmy fruit bat weighting 18 grams
Animals with the same size as a New Holland mouse
Also reaching around 8.2 cm (0′ 4″) in size do these animals:
- Southern short-tailed shrew gets as big as 7.3 cm (0′ 3″)
- Pale shrew tenrec gets as big as 7.2 cm (0′ 3″)
- Selangor pygmy flying squirrel gets as big as 8.8 cm (0′ 4″)
- Chiriqui harvest mouse gets as big as 8.9 cm (0′ 4″)
- Roborovski dwarf hamster gets as big as 7.2 cm (0′ 3″)
- Hoary bat gets as big as 7.5 cm (0′ 3″)
- Desert mouse gets as big as 8.8 cm (0′ 4″)
- Somali serotine gets as big as 8.4 cm (0′ 4″)
- Long-tongued nectar bat gets as big as 6.8 cm (0′ 3″)
- Long-clawed shrew gets as big as 7.5 cm (0′ 3″)