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Informations - Reproduction
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Sexual Maturity
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Male's dolphins reach puberty between 10 and 12 years old.
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Female's dolphins reach puberty between 8 and 10 years.
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Male's dolphins are sexually active at two months.
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Female's dolphins have their first born at about age 12 and another every 3 to 5 years.
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Male dolphins leave their mom and join a gang when they're 3 to 5 years old. These gangs, kidnap and share females.
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Females tend to stay with their mother all their life. They help raise each others kids, and teach them their culture.
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Dolphins are not monogamous, and are one of the most sexual beings on the planet.
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Gestation
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Dolphin gestation period is 11 to 12 months.
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A dolphin has one calf at a time.
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A dolphin calf is born tail first, under water.
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Headfirst births are considered breech.
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Dolphin calves are approximately two ft long.
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A dolphin calf weighs approximately 20 to 35 ibs at birth.
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Nursing
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Dolphin calves nurse from nipples hidden in skin folds.
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Dolphins nurse for several years. The mother's milk is very rich 20% to 30% fat and 10% to 16% proteins.
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Female dolphins tend to nurse longer than males.
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Dolphin teeth appear when three to four months old, 88 on top and bottom, interlocking, for gripping live fish.
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Dolphins are one of the few mammals born, with their permanent teeth. Teeth show annual growth rings like a tree.
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Dolphins have sex for pleasure, their young are born throughout the year, most are born in spring and summer.
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Dolphin babies are black when born with white vertical fold lines.
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Dolphin babies are taught how to use their sonar and echolocate.
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