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.

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 ...

Allie, a 37-year-old bottlenose dolphin, is in her second trimester and is expected to give birth in June. Brookfield Zoo Chicago Share Brookfield Zoo has a case of baby fever. Dolphin baby fever ...