Gorilla Little Joe will leave Franklin Park Zoo to start family at Pittsburgh Zoo It's a bittersweet ending for Boston residents who know and love Little Joe, a silverback gorilla who became an iconic fixture at the Franklin Park Zoo.

Gorilla Little Joe will leave Franklin Park Zoo to start family at Pittsburgh Zoo It's a bittersweet ending for Boston residents who know and love Little Joe, a silverback gorilla who became an iconic fixture at the Franklin Park Zoo.