I might sound fe_ _ _ _
Yet I'm in the opposite.

Do not count my _ _ _ _s
It was one originally.

But you can spell out
A bright star in me!

And please be sure that you're
Going to the right direction!

What animal am I?

(Each underscore indicates a redacted letter.)

Subtle Hint:

If you were indeed going to the right direction, I'm just an animal. Otherwise, I might turn mythical!

Moderate Hint:

The second 4 underscores conceal a body part.