The symbol of the ribbon, which often adorns modern day Valentines is rooted in the Middle Ages. When knights competed in tournaments, their sweethearts often gave them ribbons for good luck.
On Valentine's Day, some zoos offer the opportunity for people to buy a cockroach, name it after an ex, and then watch it be fed to an animal, such as a meerkat.
According to Welch tradition, a child born on Valentine's Day would have many lovers. A calf born on Valentine's Day however, would be of no use for breeding purposes. If hens were to hatch eggs on Valentine's Day, they would all turn out rotten.