I am the third from a sparkle bright,
I thrive throughout the day and night.
Deep in the path of a cows white drink.
I've had thousands of millions of years to think.
But one of my creatures is killing me.
And so the question I ask to thee,
is who am I?
Select a pack of riddles and try to solve it in an interesting way.
This riddle appears in the following downloadable PDF files: