I really like most drawings, even though the furry people you drew all have the same hairstyle.Apart from that they're good.
Your characters all look really stiff. The last one has sort of a gimpy leg too.
why do they have cat ears and tails
You should probably try for a different art style.
I don't draw realistically, believe me, I tried. This is my favorite and best art style. It's the only way I can draw.