I live, yet don't breathe,

I am freezing.

I am never thirsty, but i always drink.

WHAT AM I?

I am a vicous man-killer when i am angry but I am gentle and calm when I am happy. I can be a home pet but my fangs dont suit the job. I have a legend about me but I know it might not be true.

I may look scary but I am not really that scary. I may walk into your garden but then I would tell a lie.

What am I ?

When you don't have it you want it, but when you do have it you want to share it , but you have to keep it. What is it?