Raccoons solve an ancient puzzle, but do they really understand it? Scientists have been using an ancient Greek fable written by Aesop as inspiration to test whether birds and small children understand cause and effect relationships. A group of scientists have now extended this body of work to study raccoon intelligence. Their research uses the Aesop's Fable paradigm to assess if mammalian carnivores understand the principles of water displacement. Source 2u.
Raccoons are very intelligent animals if you are camping it is not good enough to just place you food in a cooler and up away from animals as They will find and open coolers, zip lock bags and even Tupperware containers. No if you want your food safe from raccoons you place it in your vehicle and lock the vehicle.