Season of Giving Blood Drive held at Milwaukee County Zoo

MILWAUKEE (CBS 58) -- Another way to give back this holiday season is with the gift of life. The 18th annual Season of Giving Blood Drive hosted by the Blood Center of Wisconsin is happening all day Thursday.

The drive runs until 7 p.m. Thursday at the Milwaukee County Zoo.

The Zoo is also offering free admission to everyone and if you donate blood you'll get free parking and child care.

Officials say there is a critical need for O negative donors who are able to help any patient in emergency situations.