Meet an old character of mine~
Her name is Aiya, obviously. xD She's a part of a feline species (let's call them Flarians, for a lack of a better name for them).
I'm sure you noticed her most distinct trait: the tail. Well, these tails are special. For one, when looking at them at a down view, they seem to resemble a flame. Each Flarian has a different colored "flame", and Aiya's is...well, blue.
When activated, these tails can glow and heat up to whatever brightness or temperature the owner wishes, and can even become as hot as fire. They are used to see better in pure darkness (say...maybe a cave), to warm themselves up during the coldest of winters, for protection, and they even help show emotion, depending on the brightness.
They're as tall as adult human males. Maybe even taller. And her choker...necklace thing (because we wouldn't want to use the word "collar"...that would make her sound like a pet) is a gift, given to her by a human friend she made.
I have more information I've thought of for her story, buuut I'll keep that to myself. ;3 Enjoy~