Things You'll Need
- Mouse
Instructions
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1
Hold the mouse in the cup of your hand on its back.
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2
Look closely near the base of the tail on the mouse’s underside.
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3
See how close to the tail the genitals are. A female mouse will have her small opening right at the base of the tail while a male mouse will have his farther away from the base of the tail.
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4
Also note if the mouse has a small swelling, indicating maleness, on his underside near the base of his tail. Not all small swellings will be obvious so don’t use that as the only determination.
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5
Pay attention to other characteristics that mark a mouse as male. Male mice’s urine stinks to high heaven. Female mice are much more scent-friendly.
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