Sarah (chimpanzee)
Sarah (full name Sarah Anne) (August 1959 – July 2019) was an enculturated research chimpanzee whose cognitive skills were documented in the 1983 book The Mind of an Ape, by David Premack and Ann James Premack. Sarah was one of nine chimpanzees in David Premack's psychology laboratory in Pennsylvania. Sarah was born in Africa in 1959. She first worked in Missouri, then in Santa Barbara, and then Pennsylvania. She first was exposed to language token training in 1967.