Nor does it know why a squirrel waves its tail in front of an angry rattlesnake.

FORBES: Crowdfunding for Science and STEM Education

You had merely to lead them to the plate-glass porch door and point out a squirrel or a cat running on the railing, or the automatic pool vacuum flipping its tail in the water as it carried on, side to side, end to end.

NEWYORKER: Soldier��s Joy