Black-bellied Hamster (Cricetus cricetus)
1. Basic Characteristics
The black-bellied hamster (European hamster) is currently the largest known hamster species. It can grow over 30 cm in length and weigh between 400–900 grams, with some individuals even reaching 460 grams. Its most distinctive feature is the black fur on its abdomen, giving it a "suited" appearance.
2. Distribution and Habits
- Native Range: Regions including Belgium, Central Europe, and Russia.
- Activity Patterns: Strictly nocturnal, active from 7 PM to 4 AM, and hides in dark places during the day for security.
- Wild Temperament: Difficult to domesticate, with most observations coming from the wild; prone to aggression and may bite when frightened.
3. Comparison with Other Large Hamsters
- Greater Hamster: While the largest hamster subfamily species in northern China, it is slightly smaller in both length and weight (220–460 grams) than the black-bellied hamster.
- Domesticated Breeds: Such as Syrian hamsters or "pudding" hamsters, which generally weigh less than 200 grams—far smaller than the black-bellied hamster.
4. Health and Lifespan
Black-bellied hamsters hibernate annually from October to March. Signs of good health include shiny fur, bright eyes, and no nasal discharge or earwax. Seek veterinary care immediately if symptoms like sudden weight loss or reduced activity occur.
Conclusion
The black-bellied hamster earns its reputation as the "giant" of hamsters due to its size and unique ecological habits. However, its wild nature makes it unsuitable as a pet.