Most of the time they have anywhere from 8 to 10 babies.
An adult rat is called a rat.
Yes. As long as they are the same gender, or one is neutered. Males are harder to get together but can be done. Females are easier. Old rats to young rats is easy, but the older rat may get annoyed by the younger ones. Adult to old / young is still easy, but the adult may be territorial. If neither of the rats have seen/met another rat before it may be harder. But if the older rat has met others before it should be easy - If you do it right.
the adult might eat the baby :/
Yes it will, a cat can even kill an adult rat.
yes
A young adult is in there early 20's where as an adult is in there 30'. A young adult can marry an adult.
The rat does give birth to a live young but at a consequence. When the rat gives birth the young is trapped in a poisonous sack just like the placenta. The rat will free its young by eating its own poisonous sack, but will die due to the build up of acid. The young will then feed on its mother to get strength.
A pup is what a baby rat is called.
Yes it is. If I ever get out of here is a young adult genre as I have read it many times and it was in that genre in the library
One or two.
She buries her young.
It depends on how old the baby rat is and also what gender both the rats are. It is easier to introduce an 8-10 week old rat to an adult male. Whereas, it is easier to introduce a 12-16 weeks old rat to an adult female. Females have a tendency to hurt babies that are too young. I have owned many rats in the past, both female groups and male. I currently have seven males in one cage and all are different ages.