Many children follow the folklore of the “Tooth Fairy” and place a lost tooth under their pillow at night and wake to find a reward. It’s well-known and celebrated in our culture, but elsewhere in the world the folklore and customs can be a little bit different.
For example, in Hispanic countries and societies, you’ll find “Ratoncito Pérez” (Perez the Mouse) or, as it’s known in parts of Mexico, “el Ratón de los Dientes” (the Tooth Mouse), according to Wiki.
The customs, too, can vary. Instead of putting a tooth under a pillow for the “Tooth Fairy,” children in South Africa, for example, put it in a slipper. In some Asian countries, children toss their lost teeth on the roof of their home. All of these facts come via mentalfloss.com
So, whereever you go in the world, you’ll petty much find a lost-tooth tradition.
Here are the sources where you can read even more about the traditions: