Chimps like brain-teasers too - TG Daily

via brain teasers - Google News http://news.google.com/news/url?sa=t&fd=R&usg=AFQjCNHUtwrIsLpkk2gmI45pIO3OIK1jgA&url=http://www.tgdaily.com/general-science-brief/69735-chimps-like-brain-teasers-too