Apparently Koko the gorilla died. She was really famous for learning to communicate with scientists using a modified sign language of about a thousand words and how much she loved cats. Apparently she knew death happens when you get old (she was about five years past the life expectancy of a gorilla I think) and when they asked where gorillas go when they die she said "comfortable hole bye".
Marco had a gorilla morph but I never got one. I think I'd feel too weird. They're too much like people, really.