July 3, 2014 2:15 PM EDT
Zachary Harris, 5, of Moore, Okla., dressed as Uncle Sam, walks with his dog, Brutus, dressed as "Lady Liberty" in the Downtown Salute Parade, July 4, 2005, in Oklahoma City, as part of the parade's Most Patriotic Dog Competition.
Bill Waugh / The Oklahoman – AP
Bill waits to compete in the Mutt Strutt patriotic dog contest during an Independence Day celebration in Moscow, Idaho, on Friday, July 4, 2008.
Geoff Crimmins/Moscow-Pullman Daily News – AP
Stretch, a Corgi from Odenton, Maryland, marched as part of the doggie drill team from Greenbelt dog training at Takoma Park's 122nd Fourth of July celebration in 2011.
Sarah L. Voisin/The Washington Post – Getty Images
A dog decked out for the annual I'On Community Independence Day Parade in Mt Pleasant, South Carolina, July 4, 2012.
Richard Ellis – Getty Images
A chihuahua at the 4th of July parade in the McKinney, Texas, town square.
Michael Prengler – AP

Write to Olivia B. Waxman at olivia.waxman@time.com.

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