Rat Tracks (IMAGE) American Friends of Tel Aviv University Caption "Rat tracks" made by rats in two city plans: Manhattan-style (left) and New Orleans-style (right. In both plans rats cover the same distance, but rats in the "Manhattan" grid cover more territory. Credit AFTAU 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.