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How to take care of mice
Get the right aquarium size.
An aquarium can be a good choice to keep mice. If you opt for an aquarium, make sure it's at least 10 gallons (about 38 liters) and has a mesh lid to prevent a mouse from escaping.
If you have one to three mice, a bigger aquarium is necessary. Four to five mice need at least a 15 gallon (about 58 liters) aquarium.