Who embodies the spirit of the San Francisco 49ers more than a gold-prospecting, sourdough-loving mascot? Sourdough Sam, a symbol of the team's rich history and vibrant energy, has captivated fans for decades. From his Levi's Stadium antics to his presence in the hearts of 49ers faithful, Sourdough Sam represents more than just a mascot; he's a tangible piece of the 49ers' identity.