Rodent litter sizes vary greatly depending on the species, environmental factors, and individual variation. There is no single answer that applies to all rodents.
Examples of Litter Sizes
* House mouse: 5 to 10 pups
* Norway rat: 8 to 12 pups
* Hamster: 4 to 12 pups
* Gerbil: 3 to 8 pups
* Guinea pig: 2 to 5 pups
Influencing Factors
Food availability, shelter, predator pressure, and the health and age of the parent can all influence how many young a rodent produces. Rodents are known for rapid breeding rates, which helps them thrive in many environments.