How many baby Guyenne spiny rats are in a litter?
A Guyenne spiny rat (Proechimys guyannensis) usually gives birth to around 2 babies.
Each of those little ones spend around 63 days as a fetus before they are released into the wild. Upon birth, they weight 24 grams (0.05 lbs) and measure 2.9 cm (0′ 2″). They are a member of the Echimyidae family (genus: Proechimys). An adult Guyenne spiny rat grows up to a size of 22 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.
The Guyenne spiny-rat, Proechimys guyannensis, or Cayenne spiny rat, is a spiny rat species from South America. It is found in Brazil, Colombia, French Guiana, Guyana, Surinam and Venezuela.
Other animals of the family Echimyidae
Guyenne spiny rat is a member of the Echimyidae, as are these animals:
- Giant Atlantic tree-rat weighting only 502 grams
- Brazilian spiny tree-rat with 1 babies per pregnancy
- Short-tailed spiny rat weighting only 285 grams
- Brazilian spiny tree-rat weighting only 108 grams
- Goeldi’s spiny rat weighting only 284 grams
- Pallid Atlantic tree-rat weighting only 215 grams
- Tome’s spiny rat weighting only 285 grams
- Guaira spiny rat with 2 babies per pregnancy
- Greedy olalla rat weighting only 206 grams
- Mouse-tailed Atlantic spiny rat weighting only 284 grams
Animals that share a litter size with Guyenne spiny rat
Those animals also give birth to 2 babies at once:
- European snow vole
- Edward’s swamp rat
- Rock hyrax
- Hershkovitz’s marmoset
- Natal multimammate mouse
- Eastern harvest mouse
- Peters’s climbing rat
- Lowland ringtail possum
- Travancore flying squirrel
- Grassland mosaic-tailed rat
Animals that get as old as a Guyenne spiny rat
Other animals that usually reach the age of 4.75 years:
- Long-tailed dunnart with 5 years
- Pyrenean desman with 5 years
- Pallas’s pika with 4 years
- Yellow-faced pocket gopher with 4.67 years
- Long-legged myotis with 4.25 years
- Uinta ground squirrel with 5 years
- Woolley’s false antechinus with 4 years
- Sandhill dunnart with 5 years
- Stripe-faced dunnart with 4.83 years
- Steppe pika with 4 years
Animals with the same weight as a Guyenne spiny rat
What other animals weight around 314 grams (0.69 lbs)?
- White-tailed olalla rat weighting 274 grams
- Microcebus coquereli weighting 328 grams
- Bunker’s woodrat weighting 375 grams
- Tropical pocket gopher weighting 350 grams
- Spiny Ceram rat weighting 306 grams
- Tawny tuco-tuco weighting 280 grams
- Uinta ground squirrel weighting 307 grams
- Mindanao treeshrew weighting 301 grams
- Goeldi’s spiny rat weighting 284 grams
- Buffy-headed marmoset weighting 374 grams
Animals with the same size as a Guyenne spiny rat
Also reaching around 22 cm (0′ 9″) in size do these animals:
- Soft-spined Atlantic spiny rat gets as big as 19.7 cm (0′ 8″)
- King rat (animal) gets as big as 26 cm (0′ 11″)
- Admiralty flying fox gets as big as 17.9 cm (0′ 8″)
- Indian hedgehog gets as big as 18 cm (0′ 8″)
- Shrew-faced squirrel gets as big as 21 cm (0′ 9″)
- Plantain squirrel gets as big as 20.3 cm (0′ 8″)
- Davao squirrel gets as big as 21 cm (0′ 9″)
- Gray-backed sportive lemur gets as big as 25.5 cm (0′ 11″)
- Sikkim rat gets as big as 19 cm (0′ 8″)
- Smoky flying squirrel gets as big as 22.9 cm (0′ 10″)