Posted: Feb 14, 2013 06:05 PM MST
Updated: Jul 15, 2016 01:33 AM MDT
The Washington Monument is dedicated, the peace symbol is born, Malcolm X is assassinated, and Nixon heads to China, all on this day.
Can't stop piling food on your plate? You may be surprised why.
Viewer photos for Love Your Pet Day on February 20, 2017.