Therianthropy is the belief that someone (a Therian) is at least part non-human animal. It can involve experiences with any species of theriotype, whether extinct or still living. Therianthropy can also refer to human-animal shapeshifting in fiction, folklore, and mythology, or clinical lycanthropy, which is a psychiatric delusion of transforming into an animal.
Spiritually, psychologically, and emotionally, they relate to the essence and behaviours of this animal, even though they don’t have the physiology to match. Oftentimes, therians feel most like themselves when they engage in specific activities this animal would do. For example, someone whose theriotype (species with which they identify) is a frog might feel most fulfilled when hopping around and croaking, while someone whose Theriotype is a penguin might feel most comfortable waddling and huddling with loved ones for warmth. The term therian is derived from the zoological word Theria, which refers to a large group of mammals (including marsupials like koalas and wombats, and placentals like elephants and whales).
You may like (or even love) a specific animal or species of animal, but that doesn’t mean that animal is your theriotype. In fact, it is very rare that a therian chooses which type of animal they identify as. Their transition into their Theriotype often starts with an involuntary, almost clairvoyant impulse. A Therian may also experience heightened senses or a tingling sensation when around other animals of their species.
While some Therians may also identify as Queer, their Therian identity is completely unrelated. Because of the words “identify as,” some people group therians in with trans and other gender-nonconforming groups. However, therians don’t consider themselves a part of the LGBT community and vice versa.
Furries are people who are especially interested in a specific animal. They often make animal personas (called ‘fursonas’) or animal costumes (called ‘fursuits’) to connect even further with this animal. However, their fursonas are still a form of roleplaying; they view the animal they’re portraying as a character. Therians, on the other hand, see their animal identity as a core part of them. They are the animal they identify as, whether they’re wearing a costume or not.
Finding your spirit animal is very different from discovering your identity as a Therian. Spirit animals are symbolic, sometimes sacred guides that take on the form of an animal and offer you protection and guidance. While they are spiritual, they’re still a separate entity that you can communicate with. Therian animal identities, on the other hand, are not separate from the therian themselves. They share one body. Spirit animals are commonly associated with Native American traditions. However, be careful using the term “spirit animal” or broadly claiming they’re the same since some Native Americans may find this disrespectful.
A shift is a psychological change in your state of being where you can feel yourself transitioning to your animal identity. If you notice a change in your thought pattern where you become more like your theriotype than your human self, if you feel a phantom limb (a tail, a claw, etc), or you suddenly dissociate and feel like you’re more present in your animal habitat than the real world, you may be undergoing some therian shifts. For example, if your Theriotype is a parrot, during your shift, you might lose your independent thought and start repeating other people, feel like you have feathers instead of skin, or randomly start visualising yourself on a subtropical island. Some Therians also experience dream shifts, where they undergo psychological and physical changes into their animal identity whenever they dream.
If you feel like your body is the wrong species whenever you look in the mirror (for example, you should be a wolf instead of a human, you should have claws instead of fingernails, fangs instead of teeth, etc.), you may be experiencing species dysphoria. Species dysphoria is a common symptom for Therians, who often feel a longing for the body of their theriotypes. Common symptoms of species dysphoria include bouts of sadness or depression, body image issues, or hallucinations where you feel peaceful imagining yourself as your animal identity.
If you’re a Therian, you’re likely to feel a calling to the habitat of your Theriotype. Sometimes, your animal identity’s habitat may even feel more comfortable than your own human home. For example, if your theriotype is a beaver, you may feel most like yourself in a marshland. It helps to research your theriotype to learn how they interact with the world around them. For example, if you enjoy the beach more than your house, that doesn’t necessarily mean your Theriotype is a crab. It could just be a tranquil environment. However, if you feel the urge to burrow into the sand and walk sideways when you visit the beach, you may be a crab Therianthrope.
Oftentimes, people connect to their Theriotype because they feel like they were that animal in a past life. Try remembering your past lives by meditating in a quiet room and asking yourself what your past life was like. If you visualize a specific animal while doing this, that animal may be your Theriotype! Practicing mindfulness and meditation regularly can help you connect to your theriotype, regardless of your past life. Try taking a past life regression test to see what your past life may have looked like.
While some therians go all out and make full animal costumes, even trying on a small piece of your Theriotype can help you connect to your inner animal. If you try on a fake tail or cat ears and like the way it looks and feels, you may want to look into Therianthropy. If you’re a Therian, you may also feel a connection to objects associated with your animal identity, even if they’re not part of your animal’s body (i.e furs, leaves, stones, stuffed animal plushies, etc).
Polytherians is the current term for Therianthrope who identify with more than one species of nonhuman animal. Polytherian replaced the old term Polywere which had first been used in 1996. While it is unknown when exactly the term Polytherian became standard within the community, it most likely came into use in 2005/2006 when the term Therianthrope was replacing Were. Poly is a prefix meaning "many", "several" or "multiple".
However, unlike a cladotherian, which identifies as a species in a specific group, a polymorph’s Theriotypes may be completely unrelated. They may feel like two different animals at the same time. They might also feel like one theriotype one moment and a different the next. For example, a polymorph may find themselves shifting into a cat in the afternoon (wanting to lounge around, purr, lick themselves) and a shark (wanting to swim, refusing to look behind them) in the evening.