Sculpture of Xolotl.
An important figure within the rituals surrounding the god Quetzalcoatl is Xolotl, his twin, a peculiar god in the form of a dog, identifiable by the many wrinkles on the sacred canine and the two rectangular protuberances on its head, relating it with the heavenly fire.
According to legend, to create man Quetzalcoatl traveled to the underworld to search for the bones of the ancestral generations, guarded over by Mictlantecuhtli; Quetzalcoatl had to take on the appearance of a dog to carry out this mission. And hairless, reddish dogs called xoloitzcuintli lead the dead on their journey to Mictlan.
Xolotl is the god of monstrosities and the patron of twins and animals that undergo transformations such as tadpoles that turn into frogs. Xolotl is also the planet Venus, the evening star, and is the companion and twin of Tlahuizcalpantecuhtli, Venus as the Morning Star, identified with Quetzalcoatl. (NMA)