1. Louisiana was named after King Louis XIV of France, who declared February 5 as Louisiana Day in 1699. This day marked the first time a French explorer explored the mouth of the Mississippi River, which would later become the state of Louisiana.

2. On February 5, 1861, Louisiana seceded from the United States to join the Confederacy. During the Civil War, Louisiana played a key role in the Confederacy's war effort, providing soldiers and resources to the cause.

3. In 1919, the first Mardi Gras parade was held in New Orleans on February 5. Mardi Gras is an annual celebration in Louisiana that typically takes place in February or March and is known for its colorful parades, costumes, and street parties.

4. Louisiana's state dog, the Catahoula Leopard Dog, was designated as the official state dog on February 5, 1979. Known for their unique coat patterns and hunting abilities, Catahoula Leopard Dogs are a popular breed in Louisiana and are often used for hunting, herding, and as family pets.

5. On February 5, 2005, the New England Patriots defeated the Philadelphia Eagles in Super Bowl XXXIX, which was held in Louisiana at the Mercedes-Benz Superdome in New Orleans. The Superdome is a popular venue for major events in Louisiana, including the Sugar Bowl and Essence Festival.