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1 to 5 days - tiny, the size of a woman's thumb - knuckle to tip - and totally pink; no hair at all.
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5 to 10 days - development of soft, reddish, sable hair around nose and mouth.
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10 days to 2 weeks - a grayish purple shadow begins spreading over the head, shoulders, and back; the belly and legs are still bright pink.
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2 to 3 weeks - grayish-purple color deepens until the emerging hair is long enough to be identified as hair.
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3 weeks - the baby's lower front teeth begin emerging. Hair is now slick, smooth, and shiny. still no hair on legs and belly.
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4 weeks - has light grayish-brownish hair all over, except lower legs and belly and under tail. Some downy white hair beginning on belly and legs.
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5 weeks - thicker hair, including legs and belly. Tail hair is short, straight, and lies parallel with the bone. Eyes open.
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5 to 6 weeks - upper front teeth begin emerging. Begins curling tail over back.
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6 to 7 weeks - fully furred, sleeping less with more active periods.
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7 to 8 weeks - tail is fluffy. Should be placed in a cage with plenty of room to play.
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8 to 9 weeks - looks like a miniature squirrel. very active and shredding your sweaters, curtains, furniture, and arms with its claws. has lost infant appearance.
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9 to 10 weeks - develops more muscular physique.
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10 to 12 weeks - about 3/4 full size - release at 12 weeks.
