How to tell baby rat gender

How to tell baby rat gender

So How to tell baby rat gender ? Unlike many similar species, male and female rats have very distinct characteristics that make telling them apart relatively simple. These differences can become apparent just a few days after the pups are born. However, baby rats find it very stressful being handled, so unless there’s a pressing need to determine their gender, you should wait until they’re a few weeks old. Once they open their eyes and start eating solid food, they are ready to be handled carefully.

How to tell baby rat gender

When the pups are a few weeks old, you can pick them up and lay them on their backs in the palm of your hand. They don’t like to stay still for long, so it might take a few attempts before you can get a good look. Just beneath the rat’s tail is the anus. A little further up towards their belly is another small opening; the urethra. In males, the distance between these two parts is roughly twice as long as in females. As male rats grow older, their testicles will descend and occupy this area.

Another obvious difference between male and female rats is the presence of nipples. Female rats have six pairs of nipples, whereas males have none. 

After determining the sex of a litter of baby rats, you should separate the males from the females. If you don’t, they will start breeding as soon as they reach sexual maturity, and you will soon have a lot more rats on your hands. Once you have separated them, you should keep littermates of the same sex together until they are six weeks old. If you plan on putting the pups up for adoption, you should handle them every day, albeit not excessively, so they get used to people and start to feel more comfortable around them.

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