(Omaha, NE) -- The pregnant giraffe at the Henry Doorly Zoo is almost ready to have her baby calf. The zoo posted on social media Thursday Zola has gained 55 pounds since their last update and should have her calf any day now. Since getting pregnant she's gone from 1,500 pounds to 1,715 pounds. Zola is 8-years-old and has been at the Omaha zoo since 2015.