In hamsters, males and females are usually distinguished by observing the shape of their tails. Male hamsters have longer and thicker tails, while female hamsters have relatively shorter and thinner tails. Male hamsters usually have a more obvious round bump at the end of their tails, while female hamsters' tails are flatter.
If it is difficult to distinguish , you can gently turn the hamster over and judge by observing the area around the anus. Female hamsters have two small holes around their anus, while male hamsters have only one small hole. The above methods are just some common methods, but they are not 100% reliable. If you need to determine the sex of your hamster more accurately, it is recommended to consult a veterinarian or professional pet store staff.