Similiar to the Hoop Earring Theory. The size of the dog correlates the level of a woman's promiscuity. The smaller the breed, the higher level of promiscuity.
"Hey man, I met this girl at the dog park. She's got a chihuahua, and she seems into me."
"She is into everyone man, its the Small Dog theory."
"She is into everyone man, its the Small Dog theory."
by PhinTheHumanZ February 3, 2018