To mark Shark and Ray Awareness Day this weekend, Shedd Aquarium is introducing Chicagoans to two rare residents — bowmouth guitarfish, also known as shark rays. Senior aquarist Heather Urbaniak ...

A bottlenose dolphin at the Brookfield Zoo Chicago gave birth to a calf early Saturday morning with the help of a fellow mom.

A bottlenose dolphin at the Brookfield Zoo Chicago gave birth to a calf early Saturday morning with the help of a fellow mom.

Nation World Newborn dolphin at Brookfield Zoo Chicago dies suddenly The calf was being carefully monitored by zoo staff and appeared healthy until things took a turn on Wednesday.