Ndume is a male gorilla who came to live with Koko when he was 10 years old, in 1991, from the Cincinnati Zoo. Koko selected him via a process similar to "video dating" and when they first met, it didn't take long at all before they became comfortable with each other. This video shows their first meeting, and how Ndume has developed into a large, powerful — yet patient and sweet — silverback gorilla.