Terry loves to try to impress the ladies next door with his gorilla impression. Chest-beating is not normally part of a chimpanzee's behavioral repertoire. However, in areas where chimpanzee and gorilla territories overlap, such as the Republic of Congo, chimps have been seen imitating their gorilla cousins. Having been born in a laboratory, Terry couldn't have learned his chest-beating from any gorillas, so he must have come up with it on his own. Or could he actually be a gorilla disguised as