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Ben Guarino

Sad dog (<a href='http://www.shutterstock.com/gallery-540553p1.html'>Funny Solution Studio</a> via <a href='http://www.shutterstock.com/'>Shutterstock</a>)

Your dog knows when you’re down

Ben Guarino

Why your cat really loves treats

Ben Guarino
Wet season butterfly. (Credit: William Piel, Oregon State University)

Why butterflies’ spots change from season to season

Ben Guarino