Scientists studying 125 years of specimens from Chicago’s Field Museum found chipmunks and voles have evolved skull changes linked to urban living. Chipmunks developed larger skulls but shorter teeth, ...

— Cora Wieneke, Mount Horeb, Wis. A Erin Flynn, conservation education curator at Henry Vilas Zoo in Madison, Wis.: Squirrels, beavers, chipmunks and rabbits all have similarly shaped teeth because ...

Prefer Newsweek on Google to see more of our trusted coverage when you search. Rodents in Chicago have been adapting to an increasingly urban environment over the past century, a new study has shown.

A Squirrels, beavers, chipmunks and rabbits all have similarly shaped teeth because all of those animals have teeth that continually grow throughout their lives. Just like your fingernails grow ...