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Guinea pig (Cavia sp.) 56 74 65 [11] Hamster: 16 23 20 ... There is a positive relationship between mass at birth and length of gestation in eutherian mammals. [17]
The guinea pig or domestic guinea pig (Cavia porcellus), also known as the cavy or domestic cavy (/ ˈ k eɪ v i / KAY-vee), is a species of rodent belonging to the genus Cavia, family Caviidae. Breeders tend to use the name "cavy" for the animal, but "guinea pig" is more commonly used in scientific and laboratory contexts. [ 1 ]
At merely four weeks old, female Guinea pigs become fertile and may produce as many as four to five litters a year. With an average gestation period of 59–72 days, a female Guinea pig may become pregnant again in as few as 6 hours after giving birth. However, there are a lot of concerns related to Guinea pig pregnancy.
Some placentals, e.g. guinea pig, give birth to fully developed young, usually after long gestation periods, while some others, e.g. mouse, give birth to underdeveloped young. Maturity and reproductive age
From the common American guinea pig to the exotic Lunkarya Guinea Pig, these are the guinea pig breeds you should know about.
For most species, the amount a fetus grows before birth determines the length of the gestation period. Smaller species normally have a shorter gestation period than larger animals. [2] For example, a cat's gestation normally takes 58–65 days while an elephant's takes nearly 2 years (21 months). [3]
Their function in non-placental mammals is to stiffen the body during locomotion, [5] but in placentals they would inhibit the expansion of the abdomen during pregnancy.) [6] the rearmost bones of the foot fit into a socket formed by the ends of the tibia and fibula, forming a complete mortise and tenon upper ankle joint. [7]
Gestation is the period of development during the carrying of an embryo, and later fetus, inside viviparous animals (the embryo develops within the parent). [1] It is typical for mammals, but also occurs for some non-mammals. Mammals during pregnancy can have one or more gestations at the same time, for example in a multiple birth. [2]