17 of 20: In this Jan. 9, 2013 photo provided by the Chicago Zoological Society, kangaroo moms, Sheila, left, 11,and Daisy, 7 1/2, stand with their joeys at the Brookfield Zoo's Australia House exhibit in Brookfield, Ill. The joeys were born on Feb. 20 and March 13 of last year and have only recently emerged from the pouches to explore their new surroundings. (AP Photo/Chicago Zoological Society, Jim Schulz) (AP Photo/ Jim Schulz)

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