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The females are pregnant from six and a half to nine months . They usually have two cubs but could have up to four The cubs are born in the winter. The mother makes a den that is about six to twenty feet long which she digs in a snow drift. After birth the mother stays with her cubs and doesn't eat until March or April when she gets out of the den; now she is half her normal weight.The newborn cubs weigh about 20 to 25 ounces . At birth a cub can't see, hear or walk . When the cub turns one month he can see and hear, but he still can't walk . By two months old a cub weighs as much as a newborn human. The cubs stay with their mothers until they are 3 years old.When there is not enough food the mother might eat its own cub. Six out of ten polar bear cubs die because enemies kill them, they starve or have accidents. |
