Where a rodent lives may determine how clever it is

AESOP’S FABLE about the town mouse and the country mouse concentrates on the dangers of city living and rather sneers at its advantages. Yet advantages there are, for mice and men alike, as long as those involved are able to grasp them. That, though, requires an ability to respond successfully to novel problems. So a pair of researchers in Germany have looked to see whether urban mice are better at doing this than rural ones. Their conclusion, just published in Animal Behaviour, is that they are.