The newest member of San Francisco Zoo's gorilla troop is making his official public debut. We got a sneak peek at Cecil, a 26-year-old silverback western lowland gorilla who will join San Francisco's three female gorillas, leading a family troop for the first time. He came from the Louisville Zoo and zookeepers describe him as even-tempered, sweet and laid back. Learn more on how to see Cecil at the zoo here: https://abc7news.com/18013079/ | ABC7 News