A TWISTED experiment in the 20th century that saw a human baby raised alongside a chimp ended in chilling tragedy. The sick experiment, carried out by animal psychologists Winthrop Kellogg and his wife Luella, was abruptly abandoned after the scientists noticed disturbing results. 8 Female chimp Gua with baby Donald at the beginning of the wicked experiment in 1931 8 At the age of just 10 months, baby Donald was raised with three-month-old chimp Gua Credit: Not known, clear with picture desk 8 Gua being tickled by the scientists during the experiment 8 Donald being deliberately teased in a psychological...