So, a diet consisting primarily of peanuts may have reduced the squirrels' ability to eat nuts with harder shells, like hazelnuts. The less mechanically demanding diet drove changes to the skull ...

you’re more likely to see a squirrel or a deer on a hike than a cougar, Borths said.) And often, only teeth or fragments of skulls are found, he added. The discovery of such a complete skull ...

The squirrel had a woodchuck (groundhog, to some) skull in its jaws! Nature: Rare to Ohio, Anna's hummingbird makes a visit It was one of those weird moments where things don’t compute right away.