Mythological hybrids are legendary creatures combining body parts of more than one species, one of which is often human.
Remains similar to those of mythological hybrids have been found in burial sites discovered by archaeologists. Known combinations include horse-cows, sheep-cows, and a six-legged sheep. The skeletons were formed by ancient peoples who joined together body parts from animal carcasses of different species. The practice is believed to have been done as an offering to their gods.
These forms' motifs appear across cultures, in many mythologies around the world.
Such hybrids can be classified as partly human hybrids (such as mermaids or centaurs) or non-human hybrids combining two or more non-human animal species (such as the griffin or the chimera). Hybrids often originate as zoomorphic deities who, over time, are given an anthropomorphic aspect.
Partly human hybrids appear in petroglyphs or cave paintings from the Upper Paleolithic, in shamanistic or totemistic contexts. Ethnologist Ivar Lissner theorized that cave paintings of beings combining human and animal features were not physical representations of mythical hybrids, but were instead attempts to depict shamans in the process of acquiring the mental and spiritual attributes of various beasts or power animals. Religious historian Mircea Eliade has observed that beliefs regarding animal identity and transformation into animals are widespread. The iconography of the Vinca culture of Neolithic Europe in particular is noted for its frequent depiction of an owl-beaked "bird goddess".