A dolphin born at Brookfield Zoo earlier this month has died.
WLS-TV reported that the female calf died Thursday morning. Zoo officials said that after the calf showed signs of weakening, staffers tried unsuccessfully to resuscitate it.
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Shortly after the dolphin was born to a 26-year-old bottlenose dolphin named Allie, the zoo reported that it weighed 40 pounds and was 3 feet long.