Jacquaux le rat!
This is Jacquaux, Maggie's and my rat for Psychology. He's the smartest rat in the class. He learned to press the right lever for food in five minutes. By ten he was consistently pressing the lever, five times a minute, on average. As he got better, we only gave him food every other time, then every three times, the every four times! By the end of it he'd pressed the lever almost three hundred times (and only pressed the wrong lever twenty times) and ate one hundred banana-flavored pellets. He's the champ!