 He finds further evidence of the association between Xolotl, dogs, death, and Mictlan in the fact that Mesoamericans viewed twins as unnatural monstrosities and consequently commonly killed one of the two twins shortly after birth.Seler speculates that Xolotl represents the murdered twin who dwells in the darkness of Mictlan, while Quetzalcoatl ("The Precious Twin") represents the surviving twin who dwells in the light of the sun.In manuscripts the setting sun, devoured by the earth, is opposite Xolotl's image.