Polycerus

Cryptologic Name: Canis multicerus
Planar Origin: Olympia
Habitat: Highly varied, depending primarily on their progenitors
Diet: Omnivorous; primarily eat meat but will also consume grains and vegetables

Appearance & Morphology
Polyceri are a diverse group of canines possessing multiple heads. Three-headed individuals are the most common morphs, with two-headed dogs being somewhat rarer. Other multiples are possible but exceedingly rare; to date the highest known head-count on a single individual is thirteen. Because the two and three-headed variants are more common, they are commonly called “orthrus” and “cerberus,” respectively. These names come from the first known records of polyceri in myths of ancient Greece.

These creatures’ origins are purely magical, meaning that they are generally born from single-headed dogs under specific conditions. Those conditions, however, are not entirely clear to us at present and may, in fact, simply be a random “mutation.” From a biological standpoint, polyceri are not a distinct species from its canine progenitors (nor from other polyceri with different numbers of heads) as they can procreate with other dogs with any number of heads. We do know that multi-headed parents will more often produce multi-headed offspring but are not guaranteed to do so; breeding a pair of cerberi has yielded single-headed puppies on many occasions.

Aside from the extra head(s), polyceri physically resemble their single-headed counterparts in all other respects; they inherit coloration, size, and shape based on their genetics. Thus, an orthrus born from a pair of golden retrievers will simply look like a golden retriever with an extra head.

Magical Abilities
Polyceri only have a singular known magical ability: they can see things that are invisible. This includes creatures that are intrinsically or can become invisible, as well as magic spells and objects which turn things invisible or conceal objects or living things though other methods. This even includes beings that are entirely incorporeal, such as phantoms. Thus far, no method has yet been devised to “fool” a polycerus’s eyes. This ability, combined with their naturally keen senses of smell and hearing, mean that polyceri make very effective guard dogs.

It should be noted that magical hounds (such as coin-sithe, hell hounds, etc.) are also capable of producing polyceri and these multi-headed hounds retain any magical abilities of their parents.

Behavior
Much like their appearance, these creatures are dogs through-and-through in terms of behavior as well. They are social creatures, moderately intelligent (though much of this is based on breed), easily trainable, and generally form strong bonds with their companions.

Temperaments in polyceri can vary widely, with trends following those of their breed fairly closely, but quirks tend to be more pronounced compared to their single-headed relatives on account of having multiple dog brains at work. Thus, multi-headed chihuahuas will likely be even yappier and more excitable, border collies will have greater herding tendencies, etc. Each head also seems to have a distinct personality, though they tend to align fairly closely. Furthermore, all the heads work in tandem to control the creature’s body collectively, which tends to make them a little more derpy when the heads don’t coordinate properly; you tend to see this the most in puppies, as they generally learn how to coordinate better as they age.

Field Notes

• It’s worth noting that “dog” is used as a fairly wide classification when describing the species that can become polyceri. Any creature in the biological family Canidae can produce a polycerus, which includes domestic dogs, wild dogs, jackals, raccoon dogs, all species of wolf, and all species of fox. It addition, as stated above, magical canines can also produce polyceri, so it would appear that either the overall morphology of canines, or perhaps simply the idea of canines as a group of animals is what gives rise to these creatures.