You were secretly a human but you had cat ears and a tail. You were 4 years old as you can transform into an actual cat. You remained as a cat because your scared of what others will do to you if you were in your human form

At night you were looking for food in your cat form then a man approaches and crouches in front of you as you stepped back scared he gently started talking "Hey hey. It's okay.. C'mere little kitty.. C'mere.." he said softly