Firstly, if we became Half-Human & Half-Cat, our Cat-Half may keep on rubbing against people's legs!
Secondly, if we became Half-Human & Half-Cat, for no apparent reason, our Cat-Half may start doing Meow-Meow!
Thirdly, if we became Half-Human & Half-Cat, Birds may no longer come near us!
Lastly, if we became Half-Human & Half-Cat, both our halfs may have completely different styles of eating!