Secrets of the Zoo: North Carolina

Zoo keepers prepare for a chimp birth, while vets investigate a bear's mystery illness.

A gorilla has emergency surgery, while zoo keepers try to take blood from a lion's tail.

Zookeepers prepare for the birth of a white rhino; two young lions leave the pride.

The zoo hopes for a polar bear pregnancy; two endangered red wolves go on a blind date; a young elephant gets some unusual treatment.

The zoo welcomes a new, timid giraffe to the herd; a pregnant bat prepares to give birth; an epileptic chimp gets a better life.

The vets are swamped as a gator needs blood drawn, and a lion requires a tooth extraction.