Has Valentine's Day gone to the dogs? Valentine's Day only comes once a year and is touted as a money-making scheme. But Valentine's Day is so much more than just a Hallmark holiday to romantic souls who cherish love. And the holiday has recently taken on a new dimension for pet lovers. People are including their dogs and cats in their celebration of love, reinventing the holiday. Chocolates, roses, and greeting cards are purchased to express undying devotion, but there are unique gifts for pets as well.  So go ahead and wear your heart on your sleeve with this fun quiz. Learn some interesting Valentine's Day facts and find out what special holiday pet your score earns. But beware--this quiz could inspire an insatiable craving for chocolate.