How many baby Richardson’s ground squirrels are in a litter?
A Richardson’s ground squirrel (Spermophilus richardsonii) usually gives birth to around 7 babies.With 1 litters per year, that sums up to a yearly offspring of 7 babies.
Each of those little ones spend around 22 days as a fetus before they are released into the wild. Upon birth, they weight 6 grams (0.01 lbs) and measure 5.5 cm (0′ 3″). They are a member of the Sciuridae family (genus: Spermophilus). An adult Richardson’s ground squirrel grows up to a size of 21.1 cm (0′ 9″).
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.
Richardson’s ground squirrel (Urocitellus richardsonii), also known as the dakrat or flickertail, is a North American ground squirrel in the genus Urocitellus. Like a number of other ground squirrels, they are sometimes called prairie dogs or gophers, though the latter name belongs more strictly to the pocket gophers of family Geomyidae, and the former to members of the genus Cynomys.
Other animals of the family Sciuridae
Richardson’s ground squirrel is a member of the Sciuridae, as are these animals:
- Gray-collared chipmunk with 4 babies per pregnancy
- Complex-toothed flying squirrel with 1 babies per pregnancy
- Ear-spot squirrel with 1 babies per pregnancy
- Indian giant flying squirrel weighting around 1.68 kilograms (3.7 lbs)
- Black flying squirrel with 1 babies per pregnancy
- Andean squirrel weighting only 803 grams
- African pygmy squirrel with 1 babies per pregnancy
- Indian giant squirrel weighting around 1.06 kilograms (2.34 lbs)
- Lady Burton’s rope squirrel weighting only 109 grams
- Cape ground squirrel with 2 babies per pregnancy
Animals that share a litter size with Richardson’s ground squirrel
Those animals also give birth to 7 babies at once:
- Dibbler
- Common opossum
- Long-tailed ground squirrel
- Fat-tailed dunnart
- European hamster
- Vinogradov’s jird
- Lesser bandicoot rat
- Long-tailed planigale
- Laxmann’s shrew
- Swamp antechinus
Animals with the same weight as a Richardson’s ground squirrel
What other animals weight around 325 grams (0.72 lbs)?
- Northern needle-clawed bushbaby weighting 278 grams
- Sulawesi naked-backed fruit bat weighting 301 grams
- Tawny tuco-tuco weighting 280 grams
- Brown-eared woolly opossum weighting 351 grams
- Eastern small-toothed rat weighting 357 grams
- Peruvian tree-rat weighting 315 grams
- Savile’s bandicoot rat weighting 260 grams
- Drab Atlantic tree-rat weighting 260 grams
- Rufous soft-furred spiny rat weighting 282 grams
- Common yellow-toothed cavy weighting 387 grams
Animals with the same size as a Richardson’s ground squirrel
Also reaching around 21.1 cm (0′ 9″) in size do these animals:
- New Guinean rat gets as big as 17.7 cm (0′ 7″)
- Great-tailed triok gets as big as 22.3 cm (0′ 9″)
- Ceram fruit bat gets as big as 20.2 cm (0′ 8″)
- Rufous elephant shrew gets as big as 25 cm (0′ 10″)
- Bornean mountain ground squirrel gets as big as 20.3 cm (0′ 8″)
- Lewis’s tuco-tuco gets as big as 17.7 cm (0′ 7″)
- Lesser flying fox gets as big as 19 cm (0′ 8″)
- Insular flying fox gets as big as 17.7 cm (0′ 7″)
- Ruddy treeshrew gets as big as 18.5 cm (0′ 8″)
- Lowland streaked tenrec gets as big as 17.5 cm (0′ 7″)