80 percent of Burmese long-tailed macaques use stone-tools to hammer food

13 May 2015

Eighty percent of a population of Burmese long-tailed macaques on an island in southern Thailand use stone and shell tools to crack open seafood, and do so using 17 different action patterns.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/CI9CMT97t4s/150513145610.htm