Choppers starred in the 1970s PG Tips adverts after being rescued from poachers in Sierra Leone at just six weeks old.

Choppers played Grandmother Ada Lott before retiring aged about six or seven. Researchers said her upper jaw was ‘significantly elongated’ when compared with that of a wild chimpanzee ...

Scientists have found evidence that Chopper, who lived at Twycross Zoo and starred in PG Tips adverts, sustained 'traumatic injuries' from living in the wild. | ITV News Central ...