Cincinnati Zoo's giraffe Zoey is celebrating her 5th birthday Monday.Zoey was born at the zoo in 2016 to mom, Jambo.She is easy to tell apart by her floppy left ear. Zoo officials said she was a bit of a clumsy calf and injured her ear when she was just a few months old. Her injury was treated by veterinary staff and her ear is fine, it just hangs down a little. Zoey is generally a very shy giraffe but loves her treats and will tear open boxes to get to her favorite food items.The zoo is working to help protect the species by working with the African Conservation Centre in Kenya, which studies the geographical movement of giraffes. This research allows scientists to figure out how much land giraffes need to successfully survive.