How many baby Australian swamp rats are in a litter?
A Australian swamp rat (Rattus lutreolus) usually gives birth to around 4 babies.With 2 litters per year, that sums up to a yearly offspring of 8 babies.
Each of those little ones spend around 24 days as a fetus before they are released into the wild. Upon birth, they weight 4 grams (0.01 lbs) and measure 4.4 cm (0′ 2″). They are a member of the Muridae family (genus: Rattus). An adult Australian swamp rat grows up to a size of 16 cm (0′ 7″).
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 Australian swamp rat (Rattus lutreolus), also known as the eastern swamp rat, is a species of rat native to the coasts of southern and eastern Australia.
Other animals of the family Muridae
Australian swamp rat is a member of the Muridae, as are these animals:
- Louise’s spiny mouse weighting only 20 grams
- Maned rat with 1 babies per pregnancy
- Snow Mountains grassland mosaic-tailed rat raching a size of 12.7 cm (0′ 5″)
- Mount Apo forest mouse weighting only 34 grams
- Transandinomys talamancae weighting only 54 grams
- Nyika rock rat with 3 babies per pregnancy
- Nikolaus’s mouse weighting only 52 grams
- Handleyomys fuscatus weighting only 49 grams
- Arctic lemming with 3 babies per pregnancy
- Black-tailed mosaic-tailed rat with 2 babies per pregnancy
Animals that share a litter size with Australian swamp rat
Those animals also give birth to 4 babies at once:
- Hoary marmot
- Bat-eared fox
- African grass rat
- Large-eared pika
- Beach vole
- Shrew gymnure
- Bank vole
- Botta’s pocket gopher
- Shrew gymnure
- Olympic marmot
Animals that get as old as a Australian swamp rat
Other animals that usually reach the age of 2.42 years:
- Merriam’s kangaroo rat with 2 years
- Cinnamon antechinus with 2 years
- Lowland streaked tenrec with 2.67 years
- Golden mouse with 2.5 years
- Honey possum with 2 years
- Hoary bat with 2.08 years
- Fawn antechinus with 2.25 years
- Bower’s white-toothed rat with 2.83 years
- Red hocicudo with 2.58 years
- Pilbara ningaui with 2 years
Animals with the same weight as a Australian swamp rat
What other animals weight around 106 grams (0.23 lbs)?
- Yellow-haired hill rat weighting 111 grams
- Hastings River mouse weighting 95 grams
- Shaw’s jird weighting 90 grams
- Southern three-striped opossum weighting 112 grams
- Fringe-tailed gerbil weighting 96 grams
- Arnhem Land rock rat weighting 94 grams
- Broad-toothed mouse weighting 125 grams
- Jaliscan cotton rat weighting 120 grams
- Santander dwarf squirrel weighting 99 grams
- Black-tailed gerbil weighting 123 grams
Animals with the same size as a Australian swamp rat
Also reaching around 16 cm (0′ 7″) in size do these animals:
- Washington ground squirrel gets as big as 16.6 cm (0′ 7″)
- Siskiyou chipmunk gets as big as 14.5 cm (0′ 6″)
- Palawan soft-furred mountain rat gets as big as 14.4 cm (0′ 6″)
- Mexican woodrat gets as big as 18.4 cm (0′ 8″)
- Douglas squirrel gets as big as 19.1 cm (0′ 8″)
- Mazama pocket gopher gets as big as 14.5 cm (0′ 6″)
- Himalayan field rat gets as big as 18.2 cm (0′ 8″)
- Desert hedgehog gets as big as 18.1 cm (0′ 8″)
- Pocock’s highland rat gets as big as 12.8 cm (0′ 6″)
- Red spiny rat gets as big as 16.7 cm (0′ 7″)