Pictures Philadelphia Zoo Celebrates Amani The Gorilla's Birthday September 4, 2019 / 10:49 PM EDT / CBS News Credit: HughE Dillon Philadelphia Zoo Celebrates Amani The Gorilla’s Birthday Credit: HughE Dillon Philadelphia Zoo Celebrates Amani The Gorilla’s Birthday Credit: HughE Dillon Philadelphia Zoo Celebrates Amani The Gorilla’s Birthday Credit: HughE Dillon Philadelphia Zoo Celebrates Amani The Gorilla’s Birthday Credit: HughE Dillon Philadelphia Zoo Celebrates Amani The Gorilla’s Birthday Credit: HughE Dillon Philadelphia Zoo Celebrates Amani The Gorilla’s Birthday Credit: HughE Dillon Philadelphia Zoo Celebrates Amani The Gorilla’s Birthday Credit: HughE Dillon Philadelphia Zoo Celebrates Amani The Gorilla’s Birthday Credit: HughE Dillon Philadelphia Zoo Celebrates Amani The Gorilla’s Birthday Credit: HughE Dillon Philadelphia Zoo Celebrates Amani The Gorilla’s Birthday Credit: HughE Dillon Philadelphia Zoo Celebrates Amani The Gorilla’s Birthday Credit: HughE Dillon Philadelphia Zoo Celebrates Amani The Gorilla’s Birthday Credit: HughE Dillon