Mouse mates with similar personalities start families faster

Anxious paired with anxious, nonchalant with nonchalant — it’s the match that matters

Mound-building Mice

MOUSE MATES   Pairs of mice from a mound-building species bred readily — or not-so-readily — in lab setups depending on how much his personality differed from hers. 

Patrick Gouat

Who knows whether opposites attract among mice? But similars do best when it comes to making a fast start on a family.