Yes. After adulthood, hamsters must be kept in separate cages. Whether they are two male hamsters, two female hamsters, one female and one male, brothers and sisters, they should not be kept in the same cage. They may fight, and in the end they can only have One alive.

Hamsters have a strong sense of territory and will attack other hamsters that invade their territory. Hamsters will also have strong aggressive behavior when they are in estrus.

Why did one of the two hamsters bite the other to death?

1. Because they were competing for territory. Hamsters are extremely territorial animals. If other hamsters intrude, they will start a fight until one party leaves the territory or dies.

2. If it is a pair of hamsters, it is possible that when the female hamster is in the breeding period, she will have an extremely bad temper, get angry at the male hamster, and even attack the male hamster, and in severe cases, bite the male hamster to death. 3. It may be that two male hamsters fought each other and bit each other to death because they were competing for their mates.