To accept one's 'therianism' therian - derived from theriomorphic- is a person who believes his core identity is that of an animal, or an animal's spirit I believe.    From Wordnik.com.  [Archive 2006-10-08] Reference

The failure of even the most stringently iconoclastic monotheists is that while they reject the animal heads, the horns and the hooves of theriomorphic deities they nevertheless maintain the absurd anthropomorphism of not just humanity but masculinity.    From Wordnik.com.  [Archive 2007-04-01] Reference

Here again, though to a less extent than in tree cults, the theriomorphic aspect recurs; in the north of Europe, in ancient Greece, in China, the water or river spirit is horse or bull-shaped; the water monster in serpent shape is even more widely found, but it is less strictly the spirit of the water.    From Wordnik.com.  [Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1] Reference

Galilee with theriomorphic polytheism, that is, the tendency to embody the qualities of divinity in animal forms.    From Wordnik.com.  [The Ancient East] Reference