Behind this rather clickbaity title, is the link to the book published by our friends over at FurScience.
It's about furries but it contains a chapter about Therianthropy:
(click the little book image repeatedly to get the download)
You definitely should read it, especially if:
a) You claim to know what real therianthropy is.
b) You want to know why there are so many wolves.
c) You think you know what furries are.
As with all scientific publications, it's important to consider some things about what is and what is not a valid conclusion based on the data, etc. The authors of the publication are scientists though and they already took precautions such as taking care of their sample size, comparing their data to data from a control group, etc.