Zoo monitoring three moms-to-be

May 22, 2013 6:41:28 AM PDT
These moms-to-be are being monitored for their body temperature -- and blubber thickness.

Three dolphins are pregnant at the Brookfield Zoo in Chicago.

Zoo officials expect to hear the splash of little flippers this summer and fall.

Chicago Zoological Society veterinarian Jennifer Langam says prenatal care for the dolphins is similar to that for human moms.

The pregnant bottlenose dolphins will be getting ultrasound exams and blood tests.