Ozzie gets a bath every week or so. (Usually once a week during the summer. Less often the rest of the year.)
He gets wiped down and brushed and dusted with baby powder daily. His face and backside get wiped as needed. (His face is usually one or two times a day in addition to his nightly wipedown. He's very messy.
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I trim his nails about once a month and his ears as needed.