The first time I put a crab in a vending machine toy container, it took the octopus a day to get it. I wasnt there to see it happen and wondered if it may have just accidentally opened.
Today, for the 2nd time, I put a crab in the container and dropped it in the tank, hoping that he really did open it the first time and has 'memory' of his first encounter.
He opened it about a minute!! And heres the video
Smart Little Guy