every day
A preteen should get around 9 hours of sleep.
At least once. You should also wash your hands after and before every meal.
Once is plenty. You should bathe every day so you don't smell bad or get an infection.
every day or every other day
every day
None! Hamsters groom themselves.
You can bathe him/her once a week,and try a flea collar.
It depends on how fit you are!
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Two
Koalas, like many mammals, bathe by licking themselves.
i think an average guinea pig should 5-15 times a day i can ensure you if they have more they are perfectely fine for an example my guinea pig did about 30 one day but that was because it had a big meal.