Domestic dogs (Canis familiaris) have held significant and diverse roles in the religions and mythologies of numerous cultures throughout human history. In the context of the history of religion, the roles of dogs range from symbolic representations of virtues like loyalty and protection to teachings about purity and ritual practices. In Animals and World Religion, animal ethicist Lisa Kemmerer explores the relationship between animals and global religious traditions. The work examines how different religions perceive and engage with animals, emphasizing their roles in religious narratives and rituals and highlighting the connection between humans and animals in spiritual contexts.
In mythology, dogs often served in companion and protective roles, such as guarding the gates of the underworld in Indo-European mythologies. Historian Julien d'Huy identifies a common set of three narratives about dogs that appear in various religious traditions. The first narrative emphasizes a connection to the afterlife, reflecting the gatekeeping role often seen in Indo-European mythologies. The second narrative focuses on the bond between humans and dogs, while the third pertains to the association of dogs with the star Sirius. Evidence presented by d'Huy suggests an association between the mythological records from various cultures and the genetic and fossil records related to dog domestication.