carries more babies carries more babies
for a pet, or for their predators
Um...rats are generally shaped kind of differently from humans.
Rats are a type of mammal, and as such, they reproduce in essentially the same way that other mammals do. Baby rats gestate in their mother's uterus and when they are ready, they come out. The major difference between the birth of rats and the birth of human beings is that rats always have multiple births. They are born in litters. Humans are usually born one at a time.
The purpose of the annual bulb harvest in "Mrs. Frisby and the Rats of NIMH" is for the rats to collect bulbs from the farmer's garden to use as a source of food during the winter months when their normal food supply is scarce. This harvest ensures that the rats have enough sustenance to survive during the colder season.
Having his toes eaten by Rats.
Personification in the story "The Three Skeleton Key" can be seen when the author describes the rats as having human-like qualities, such as intelligence and determination. For example, when the rats swarm over the lighthouse in a coordinated manner, it gives them a sense of purpose beyond typical animal behavior.
inbreeding has resulted in these rats being "twins" of all the others.
Rats are social animals and benefit from having companions for their well-being and social interactions. They thrive in the company of other rats and can become lonely and stressed if kept alone.
Yes, rats are social animals that benefit from having companions for optimal well-being and social interaction.
Short answer: Yes.
The purpose of a typical mouse, in computer terms, is to help the user make selections on the computer easily and accurately. If you're talking about the mouse (animal), then the purpose of mice is to exist in the food chain. Birds, among other animals, feed on rats. Thus, rats are somewhat essential in maintaining food chains, food webs, and etc.
A scientist who regularly tests on rats will usually breed their own as rats breed very easily and have many babies in one litter. This also helps them to reduce the risk of the rat having an underlying disease or illness.