Bottlenose dolphin Allie, 37, is pregnant, Brookfield Zoo Chicago announced. The calf is due in June, but 24-hour labor-watch ...

Dolphins are very social animals that scientists have observed “smiling” while playing with one another. But a solitary bottlenose dolphin, known by the name Delle, has been observed near the ...

This summer the Brookfield Zoo’s bottlenose dolphin habitat will reverberate with the chatty whistles and playful leaps of a new calf — the first expected to be born there in over a decade.