GAMES RIGHT! Newborn opossums are the size of a... Dollar Honey bee Magazine Next Question After just 1 week of suckling, the babies triple their size. After about 60 to 70 days in the pouch, the youngsters' eyes finally open, and they have grown to the size of a white-footed mouse, weighing about an ounce. © 2024 High Touch Entertainment, LLC All Rights Reserved Tweet