"Can a therian have a theriotype that is an insect, monkey, fish, [insert other rarely claimed theriotype]?"
"There remain some therians, even sites or boards, that believe only certain types of animals can be theriotypes while other animals are excluded. However, a wide variety of animal types have been represented in the online community [...] There appears no restriction on the capacity for a person to end up being probably any type of animal [...] We currently do not know the bounds and limitations by which the internal self, identity, soul, or psychology can subjectively manifest within an individual. And there is thus the potential that there are people (whether or not they ever enter the online therian or otherkin communities) who have animal, plant, other organism, etc. internal aspects equivalent to that of therians and otherkin but of creatures or organisms many therian/’kin may not expect or even want to accept are such internally. Skepticism can be understandable, but it’s important to be respectful to others even amongst skepticism and to realize that we are far from honestly having all of the 'facts' about being therian and otherkin."
- Excerpt from "Question and Answer," an article by Sonne, written in 2008 and 2009. You can read the whole article on Project Shift, a website that collected articles about therianthropy.