Souris City Results (IMAGE) CNRS Caption When we ask mice to choose between sweetened water and plain water, and the position of these rewards alternates between right and left, we can distinguish animals that follow the sugar and therefore alternate between right and left (Indiv #1), and animals that almost always choose the same side, regardless of the drink (Indiv #2). Credit Nicolas Torquet/NPS Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.