They did a little dance, had some sex, and the sperm of the male fertilized the eggs of the female...
Rats can start making babies around 5 weeks old. Rats are pregnant for 28 days -occassionally they may have them a day or two early or later.
A pregnant rat has up to about 20 baby rats.
A pregnant doe. All female rats are called does :)
They can get pregnant again, immediately after they give birth. So if you don't want more baby rats, keep the male rat in a separate cage when the mother is giving birth.
liking for the odor of alcohol
You need to have your rats spayed/neutered so that if there are any mistakes made when sexing (checking if an animal is a boy or a girl) they won't accidentally become pregnant.
If you mean can you see they're pregnant by a fat tummy - then yes ! I used to breed rats and mice for my reptiles, and remember them getting fat in a few weeks !
rats are pregnant for about 22 days, but it can vary depending on the pregnant rat and the number of pups she is carrying. They usually have about 7-11 pups which are called pinkies. Shouldnt disturb them if you can for about 3 days. they are weened around 21 days.
They might eat each other's babies, so you may want to separate the pregnant moms.
No, hamsters and rats are different species so can't reproduce. I would have thought rats and hamsters would probably fight, as Syrian hamsters are extremely territorial and rats are so much larger than hamsters anyway.
The difference between rats and mice are rats are a bit larger and they don't get as scared of things like mice. I prefer mice more than rats because mice are alot more active and it's easier to tell if they're pregnant
I had a pet rat who, when we got her from the pet store, was already pregnant. We didn't know this until we had her for a couple days. She kept kidding bigger and bigger until about a week after we had her, she gave birth. Rats are pregnant for 28 days -occassionally they may have them a day or two early or later. So, if you know about when she got pregnant, it'll be around 28 days later.