CHICAGO -- Charlie Jacobsma slapped the surface of a pool enclosure at Chicago’s Shedd Aquarium and scanned the water for movement. Moments later, the head of a beluga calf emerged, mouth agape in ...

Moments later, the head of a beluga calf emerged, mouth agape in what looked like a smile. Jacobsma's face lit up in response ... "It’s almost like petting a dog or a cat, and you’ll see ...