Breeding Chinese Hamsters
Chinese hamsters are sexually mature at 8 weeks of age but should not be bred until 4 months of age. Females come into heat (estrus) every 4 days. Female Chinese hamsters can be aggressive towards the males so it is advised to separate immediately after mating.
The gestation period is 18-21 days. A typical litter size is between 4-6 pups.
Pups can be weaned at 21 days at which point they can be separated from their mother.