Laughing quads are marking a decade of mischief

The Mathias quads still laugh a lot. Not in perfect unison, but with the undeniable joy of youngsters in a house full of love and animals and look-alike siblings who hatch mischief together.
The identical quadruplets, who giggled their way into the hearts of millions as babies on "America's Funniest Home Videos," are about to turn 10 (on Feb. 16).

.

Grace, Emily, Mary Claire and Anna are still having fun.

.

The famous video featured the four babies sprawled in bed around their mother, Allison, and cackling at the funny faces made by the man behind the camera, dad Steve. Years later, people still can't get enough of it. One YouTube version has received nearly a million hits in the past year alone.

.

Baby Quadruplets Laughing

.