Generally speaking, the hamster’s buttocks are swollen. This is a minor problem. Don’t worry too much. This is actually a condition when the hamster is mature and in estrus. The blood circulation becomes faster, the blood is congested, the volume becomes larger, and the color changes. Red, resulting in the appearance of two red "little giant eggs", which are the "majestic" signs that male hamsters are proud of.
If the hamster bites the swollen area and there are obvious abnormalities in the skin, then This indicates that there may be a skin infection, and it is necessary to consider disinfecting and applying medicine to the hamster. Then consider whether there is some trauma that caused this swelling.
