This depends entirely on how dirty the person is, and doesn't really have anything to do with age. A person should bathe at least every other day. If they are very active and sweaty, then they should bathe at least daily.
My 7 year old girl bathes twice a week
a 6 year old should pee around three times a day
You can bathe him/her once a week,and try a flea collar.
You should not bathe baby rabbits, or bunnies - especially if they're new born. Their mothers will take care of that. If they have grown their hair and teeth, then you should bathe them 4 times a year. Rabbits really have no need to be bathed unless they have had grooming issues (diarrhea) or have been loose and rolled in the dirt or you suspect fleas (then a flea bath is in order). Never bathe a rabbit under 2 months old.
There is no "should" for kissing. You do it as often as you feel comfortable.
25 times a day
every day
every day!
twice a day
By the age of 12 most normal children would have mastered how to bathe.
A twelve-year-old who has that height should have a weight of between 90 and 99 pounds. The average twelve-year-old with that height often weighs 91 pounds.
at least every other day