The clothing brand that features two horses and the words 'original riveted' in its logo is Levi Strauss & Co., commonly known as Levi's. The logo is a representation of the original Levi's jeans, which were designed for durability and strength. The two horses indicate the strength and durability of the jeans, while the words 'original riveted' refer to the unique rivet design that Levi's founder, Levi Strauss, used to reinforce the stress points in the jeans. Today, Levi's is a renowned clothing brand that sells a wide range of apparel and accessories, including jeans, jackets, shirts, and more.