[quote=@Sublimation]
So to specify, Therianthropes don't transform into their animal forms completely right? So a werewolf wouldn't turn into a wolf, but a sort of hybrid. Also regarding them, can the base species not be a wolf at all? 
[/quote]

To your first question: Yes, they'll be a humanoid wolf creature. To your second question: They can, but it's a process. It starts off as a wolf because they don't know the full ritual anymore. I was gonna write this up and add it to the documentation when I got time. but I'll say it here and then write it later. You can become another animal by going through a spiritual journey while taking the elixir (combine it with the herbs used to put you in the trance state).

In short, if your character has that knowledge, then yes, they could be something other than a werewolf from the start of their transformation. This would also allow them to be able to transform completely into an animal, as well, but that would take more practice.