It Won't Directly Cause Death, but May Trigger Health Problems
Generally, if a hamster drinks too much water, it won't directly lead to death. However, it may trigger some health problems that require attention. Here is a detailed analysis:

Short-Term Effects
When a hamster drinks an excessive amount of water, it may cause an increase in urine output, which is a normal physiological reaction. But if the water intake significantly exceeds the normal range (15-20 ml per day in summer and 10-15 ml per day in winter), it may lead to mild intestinal discomfort, such as diarrhea or abdominal pain.
Long-Term Effects
- Kidney Burden: Long-term excessive water intake will increase the metabolic burden on the hamster's kidneys, and may even lead to kidney diseases.
- Diabetes Risk: If the hamster's water intake increases abnormally, it may be an early symptom of diabetes. It is recommended to seek medical advice for a check-up in a timely manner.
Prevention and Treatment
- Control Water Intake: Reasonably control the daily water intake according to the season and the hamster's body size.
- Observe Symptoms: If the hamster shows symptoms such as diarrhea, abdominal pain, or an abnormal increase in water intake, adjust its diet in a timely manner or seek medical treatment.
- Provide Clean and Safe Water Source: Ensure that the hamster drinks cooled boiled water, and avoid using raw water.
In conclusion, although a hamster drinking too much water won't directly cause death, it may trigger health problems. Therefore, the owner needs to closely monitor the hamster's water intake and physical condition.