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 ?

Im a snake because i can have poisonous fangs. It does have a legend about me. Everyone one thinks im scary i have no friends. Also I cant walk into your garden but i can slither into your garden so it would be a lie!