Digit was the favorite gorilla of American zoologist, Dian Fossey, who studied gorillas in the wild and defended them from poachers.
"Sometime during the day on New Year's Eve 1977,* Fossey's favorite gorilla, Digit, was killed by poachers. As the sentry of study group 4, he defended the group against six poachers and their dogs, who ran across the gorilla study group while checking antelope traplines. Digit took five spear wounds in ferocious self-defence and managed to kill one of the poachers' dogs, allowing the other 13 members of his group to escape. Poachers sell gorilla hands as delicacies, magic charms or to make ash trays. Digit was decapitated, and his hands cut off for ashtrays, for the price of $20. After his mutilated body was discovered by research assistant Ian Redmond, Fossey's group captured one of the killers. He revealed the names of his five accomplices, three of whom were later imprisoned."
Source: Biography of Dian Fossey, Wikipedia. Years of birth and death confirmed by video stream of graveyard showing marker, found at www.thelegacyofdianfossey.com