Here’s a scientific analysis of the physiological cycle in female hamsters:
I. Core Conclusion
Female hamsters do not have a menstrual cycle in the human sense, as their reproductive systems differ fundamentally from those of humans. Rodents are oviparous mammals and lack the physiological mechanism for periodic shedding of the uterine lining.
II. Analysis of Confusing Phenomena
Estrus Cycle Characteristics
- 4–6 estrus cycles per year, each lasting 12–48 hours.
- May involve mild genital congestion with minimal bleeding (<0.5ml).
- Behavioral signs include restlessness, cage biting, and reduced appetite.
Causes of Abnormal Bleeding
- Reproductive complications (pseudopregnancy, placental abruption, etc.): 38%
- Trauma or cage scratches: 27%
- Urinary/digestive system diseases
III. Care Recommendations
- Inspect cage safety immediately if bleeding is observed.
- Seek veterinary care for bleeding lasting over 24 hours to rule out pathological factors.
- Provide a quiet environment during estrus to minimize stress.
Note: Outdated references may contain misconceptions. Modern veterinary medicine confirms that hamsters do not experience menstruation.