The possible reasons why a hamster doesn't drink water may include problems with the water bottle or water dispenser, water quality issues, the hamster not knowing how to use the water dispenser, the water equipment not being clean, the sufficient water content in the diet, the hamster being sick or uncomfortable, and its preferences for the water quality or water temperature.

Solutions:
- Check and adjust the water bottle: Ensure that the water bottle or water dispenser is not blocked. Gently press the water outlet to confirm that the water flows smoothly. Adjust the height of the water bottle to make it easier for the hamster to reach. If there are stuck air bubbles at the water outlet, you can shake or tap the water bottle to expel the air bubbles.
- Clean the water bottle regularly: It is recommended to clean the water bottle every two days. Use a special brush to scrub the inside. You can clean it with warm water or diluted food-grade white vinegar, and then rinse it thoroughly with clean water to avoid any remaining odors.
- Use your finger to guide: If the hamster doesn't know how to use the water dispenser, you can gently touch the water outlet with your finger to guide it to learn how to drink water.
- Replace the water source: Choose suitable water quality. Boiled and cooled water is the most popular water source for hamsters. Avoid using tap water or mineral water.
- Feed fruits and vegetables: If the hamster is reluctant to drink water, you can feed it some foods rich in water, such as apples, cucumbers, etc. But pay attention to the appropriate amount to avoid health problems caused by overfeeding.
- Adapt to the new environment: A newly arrived hamster may be reluctant to drink water because it is not used to the new environment. Give it some time to gradually get familiar with the new environment.
Consequences and Health Effects of a Hamster Not Drinking Water:
If a hamster doesn't drink water for a long time, it may lead to dehydration, which in turn can cause health problems. Dehydration will affect the normal physiological functions of the hamster, resulting in symptoms such as weight loss, dry skin, and sluggish movement. Severe dehydration may even lead to death. Therefore, it is very important to ensure that the hamster has an adequate intake of water.