Huallepen has the body of a sheep and the head of a young calf. It had twisted feet with short front legs and a back end that resembles a seal. It lives in pools and frequently mates with other herded animals. The offspring produced has twisted muzzles and legs. It only comes out at night and if a pregnant woman goes near this beast then their child will be born with twisted legs and muzzles.
The eyewitness accounts of these creatures seem to resemble, at least in a rudimentary fashion, reports of both British Water horses and the Australian Bunyip, indicating that these animals may, in fact, be water dwelling mammals or a rogue (and violent) sub-species of pinniped.
As if to enhance the correlation between the Huallepen and its European cousins, this ordinarily shy beast (which is virtually harmless on land) is said to reveal a vicious disposition when encountered in its aquatic environment. This beast is also said to reportedly be able to mate with either sheep or cattle, creating bizarre hybrid offspring. This is a trait which is often attributed to the Kelpie as well as the Tarbh-Uisge.
Some researchers have even suggested that there may be some correlation between this animal and Hueke-Hueke’ as well as the notorious El Cuero – although they may simply be different species sharing a similar habitat.
Much like the unfortunate eyewitnesses, it was also reported that pregnant mothers unlucky enough to have dreams of these creatures on three consecutive nights would experience terror so profound as to cause physical deformations in their unborn children.