Summer is full of holidays like Memorial Day, Flag Day, and Fourth of July to celebrate the USA. No matter how many Old Navy t-shirts your mom has in her collection or how much time you spent putting together the perfect red, white, and blue ensemble, these pets have you beat. Maybe you should take some pointers from these Yankee Doodle doggies, troop-supporting cats, and other All-American animals who know how to look cute and patriotic at the same time.