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Life Spans
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The average life span of a dolphin is believed to be 45 years. Some dolphins may live well into their sixties.
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Age can be estimated by periodic growth rings on the teeth.
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Deaths
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Dolphins in the wild die from one or more of the following: pneumonia, parasites, predators, pollution, commercial fishing, depletion of food and habitat, and capture for sea parks and aquarium.
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