According to the U.S. Census Bureau, the venerable necktie is the most popular of all Father's Day gifts.

Father's Day is celebrated in more than 100 countries around the world and dates back to the 1500s.

Each year, the date of Father's Day changes, but it always falls on the third Sunday in June.

Saint Joseph's Day, also called the Feast of Saint Joseph, is the principal feast day of Saint Joseph, husband of the Virgin Mary and legal father of Jesus Christ. In Catholic countries such as Spain, Portugal, and Italy, Father's Day has been celebrated on March 19 as Saint Joseph's Day since the Middle Ages.

The Father's Day card business will ring up about $780 million this year, but only 50% of those cards are purchased for dads. Nearly 15% of Father's Day cards are purchased for husbands. Other recipients include grandfathers, sons, brothers, and uncles.

While Carnations are the official flower of Mother's Day, the rose is the officially recognized flower of Father's Day and was selected by the holiday's founder herself. At the first American Father's Day celebration, Sonora Smart Dodd pinned roses onto the clothing of children to honor their fathers--red roses for a still-living father and a white rose for the deceased. Dodd also delivered roses to any father in the community who was unable to make it to the service.

The share of fathers who are stay-at-home dads ticked up from 4% in 1989 to 7% in the latest polls. As a result, dads make up 17% of all stay-at-home parents, up from 10% in 1989.

Mrs. Doubtfire follows recently divorced Daniel Hillard (Robin Williams), an actor who dresses up as a female housekeeper to be able to interact with his children. The film addresses themes of divorce, separation, and the effect they have on a family.

In 1909, Sonora Smart Dodd, who along with her five brothers was raised by her single father, attended a Mother's Day service at Central Methodist Episcopal Church. Feeling strongly that fathers needed recognition as well, she approached the Spokane Ministerial Alliance and suggested her own father's birthday, June 5, as the day of honor for fathers. The Alliance chose the third Sunday in June instead, and the first American Father's Day was celebrated June 19, 1910, in Spokane, Washington.

The male seahorse is equipped with a brood pouch on the ventral, or front-facing, side of its tail. When mating, the female seahorse deposits up to 1,500 eggs in the male's pouch. The male carries the eggs for 9 to 45 days until the baby seahorses emerge fully developed, but very small.