Toothfairy

In early Europe, there was a tradition to bury baby teeth that fell out. Some believe that the Tooth Fairy evolved from the tooth mouse depicted in an 18th century French language fairy tale. In "La Bonne Petite Souris," a mouse changes into a fairy to help a good queen defeat an evil king by hiding under his pillow to torture him and knocking out all his teeth.

This combination of ancient international traditions has evolved into one that is distinct Anglo-Saxon and Latin American cultures among others.

Tooth tradition is present in several western cultures under different names. For example in Spanish-speaking countries, this character is called Ratoncito Perez, a little mouse with a common surname, or just "raton de los dientes" (Tooth Mouse). The "Ratoncito Perez" character was created around 1894 by the priest Luis Coloma (1851–1915), a member of the Real Academia Espanola since 1908. The Crown asked Coloma to write a tale for the eight-year old Alfonso XIII, as one of his teeth had fallen out. A Ratón Pérez appeared in the tale of the Vain Little Mouse. The Ratoncito Pérez was used by Colgate marketing in Venezuela and Spain^{citation needed}.

In Italy also the Tooth Fairy (Fatina) is often substituted by a small mouse (topino). In France, this character is called La Petite Souris (« The Little Mouse »). From parts of Lowland Scotland, comes a tradition similar to the fairy mouse: a white fairy rat which purchases the teeth with coins.

In some Asian countries, such as India, Korea and Vietnam, when a child loses a tooth the usual custom is that he or she should throw it onto the roof if it came from the lower jaw, or into the space beneath the floor if it came from the upper jaw. While doing this, the child shouts a request for the tooth to be replaced with the tooth of a mouse. This tradition is based on the fact that the teeth of mice go on growing for their whole life, a characteristic of all rodents.