How many baby Black rats are in a litter?
A Black rat (Rattus rattus) usually gives birth to around 5 babies.With 3 litters per year, that sums up to a yearly offspring of 15 babies.
Each of those little ones spend around 23 days as a fetus before they are released into the wild. Upon birth, they weight 4 grams (0.01 lbs) and measure 4.2 cm (0′ 2″). They are a member of the Muridae family (genus: Rattus). An adult Black rat grows up to a size of 19.4 cm (0′ 8″).
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 black rat (Rattus rattus), also known as ship rat, roof rat, or house rat—is a common long-tailed rodent of the stereotypical rat genus Rattus, in the subfamily Murinae.The black rat is black to light brown in colour with a lighter underside. It is a generalist omnivore and a serious pest to farmers because it feeds on a wide range of agricultural crops. It is sometimes kept as a pet. In parts of India, it is considered sacred and respected in the Karni Mata Temple in Deshnoke.
Other animals of the family Muridae
Black rat is a member of the Muridae, as are these animals:
- Yellow-spotted brush-furred rat with 2 babies per pregnancy
- White-footed rabbit-rat weighting only 200 grams
- Long-nosed Luzon forest mouse weighting only 34 grams
- Robert’s hocicudo weighting only 83 grams
- Nigerian gerbil weighting only 29 grams
- Jalapan pine vole with 1 babies per pregnancy
- Wood lemming with 5 babies per pregnancy
- Müller’s giant Sunda rat becoming 2 years old
- Thomas’s Oldfield mouse weighting only 77 grams
- One-toothed shrew mouse weighting only 21 grams
Animals that share a litter size with Black rat
Those animals also give birth to 5 babies at once:
- Kowari
- Daurian ground squirrel
- Small vesper mouse
- Northern gracile opossum
- Least weasel
- Middendorf’s vole
- Long-tailed shrew
- Winter white dwarf hamster
- Dalton’s mouse
- Large vesper mouse
Animals that get as old as a Black rat
Other animals that usually reach the age of 4.17 years:
- Woodland thicket rat with 4.33 years
- Mountain pocket gopher with 5 years
- Bridled nail-tail wallaby with 5 years
- Smith’s vole with 3.5 years
- European water vole with 5 years
- Yellow-faced pocket gopher with 4.67 years
- Woolley’s false antechinus with 4 years
- Stripe-faced dunnart with 4.83 years
- Gray tree rat with 3.75 years
- Uinta ground squirrel with 5 years
Animals with the same weight as a Black rat
What other animals weight around 142 grams (0.31 lbs)?
- American pika weighting 158 grams
- Altiplano chinchilla mouse weighting 170 grams
- Littledale’s whistling rat weighting 126 grams
- Giant roundleaf bat weighting 115 grams
- Vinogradov’s jird weighting 117 grams
- New Guinean rat weighting 133 grams
- Masked white-tailed rat weighting 149 grams
- Chacoan tuco-tuco weighting 166 grams
- Smoky pocket gopher weighting 150 grams
- Dent’s vlei rat weighting 120 grams
Animals with the same size as a Black rat
Also reaching around 19.4 cm (0′ 8″) in size do these animals:
- Kintampo rope squirrel gets as big as 18.3 cm (0′ 8″)
- Chacoan tuco-tuco gets as big as 20 cm (0′ 8″)
- Red bush squirrel gets as big as 20.9 cm (0′ 9″)
- Gilliard’s flying fox gets as big as 15.9 cm (0′ 7″)
- Indian long-eared hedgehog gets as big as 16.3 cm (0′ 7″)
- White-tailed antsangy gets as big as 22.5 cm (0′ 9″)
- Speckled dasyure gets as big as 19.6 cm (0′ 8″)
- Australian swamp rat gets as big as 16 cm (0′ 7″)
- Vogelkop ringtail possum gets as big as 21.6 cm (0′ 9″)
- Summit rat gets as big as 19 cm (0′ 8″)