An itch is a pesky problem. While humans and primates use their fingers, canines and cats use limbs, and rhinos and buffaloes have their symbiotic "tick birds", what do elephants have? Turns out, it's their brain. Researchers at the Bengaluru Bannerghatta Biological Park recently observed novel use of tools among some of its 23 resident Asian Elephants (Elephas Maximus) for hitherto unseen "problem solving".