For the past five weeks, more than 80 million people have watched a YouTube livestream as April's unborn calf takes its sweet time in her womb. SEE ALSO: You guys, giraffe births are horrifying.

Brookfield Zoo Chicago Share Brookfield Zoo’s bottlenose dolphin is making healthy progress toward giving birth to the zoo’s first bottlenose dolphin calf in a decade. Allie, the zoo’s 37 ...