Mole dancer

This mole was dancing,
Why, I don't know.
But this mole was dancing
You should see him go.
One minute the tango , next the...oh no!
This mole was dancing,
With who, I don't know.

Who? You ask, well I'll tell you see,
Who else, but of course, with no-one but me.
Who am I, Well I'll tell you, if you don't cry,
Well I'm the fox, and the mole...will soon die!