‘For the past 12 years, visitors to Sweden’s Furuvik Zoo have boldly approached the chimpanzee enclosure only to beat a hurried retreat after being rudely pelted with stones by one of the apes. Now scientists have claimed that the culprit, Santino, who collects arsenals of weapons ready to throw at visitors, is living proof that animals are able to plan for the future, a skill previously thought to be restricted to humans.’
Story and picture in the Independent