Original sentence: Most therianthropes claim physical shapeshifting is impossible, mostly on scientific grounds, though there are therianthropes who believe differently and some who even claim to have done so.The term contherianthropes is sometimes used for those who do not claim to mentally shift but believe they have animal and human sides which are mixed up into a single whole.While some therianthropes believe they can take on the mindset of their "other side" in what is referred to as a mental shift, they retain control and are no greater danger to themselves or others
Edited sentence: Most therianthropes claim physical shapeshifting is impossible, mostly on scientific grounds, though there are therianthropes who claim differently and some who even claim to have done so.Some therianthropes do not shift at all: these people are called contherianthropes and feel their animal and human sides are mixed up into a single whole.While some therianthropes believe they can take on the mindset of their "other side" in what is referred to as a mental shift, they retain control and are no danger to themselves or others