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Bottlenose dolphins use 'baby-talk' with their calves
Summary by Ground News
Researchers recorded the signature whistles of 19 mother dolphins in Florida. Scientists believe it may help offspring learn to pronounce novel sounds. Research dating back to the 1980s suggests that human infants may pay more attention to speech with a greater pitch range. Female rhesus monkeys may alter their calls to attract and hold offspring's attention.
According to a study published in the journal “Proceedings of the National Academy of Sciences”, female dolphins also use a “baby voice” to communicate with their young.