Common Aztec tattoos include the eagle and jaguar, which represent the warrior class of the Aztec people. Each image represents a specific calendar day and a specific deity that was important to the Aztec people.
The Aztec calendar only has 20 days in each month. For example, an Aztec serpent tattoo represents the fifth day in the calendar and is a symbol for the snake deity. Eagle tattoos represent the 15th day of the calendar and depict the eagle as a high-ranking warrior. Skull tattoos are representative of the sixth day in the Aztec calendar and are a personification of death.