In heraldry, the bat is an unusual and distinctive symbol that can represent vigilance, perception, protection, and life in darkness, though its meaning is often shaped by rarity and local interpretation rather than a single fixed tradition. Because the bat is a creature of the night, it may suggest alertness, mystery, and the ability to navigate what is hidden or uncertain, giving it a more complex symbolism than many common heraldic animals. In some contexts, it can point to guardianship, especially through its association with sharp senses and awareness beyond ordinary sight, while in others it may reflect a geographic or family connection, particularly in places where the bat entered heraldry through local legend or visual punning.

One of the best-known examples is the bat associated with the heraldry of Valencia, where it became an important civic emblem and remains a recognized symbol of the city. Although rare in comparison with lions, eagles, or stags, the bat stands out in heraldry for its memorable silhouette and layered symbolism. Its presence in a coat of arms can therefore convey not only individuality and watchfulness, but also the idea that strength and guidance may come from unexpected forms.