Answer:
This is in a realm of true and in a realm false, but you experience me as you turn and toss.
I have a face, yet no senses. But I don't really care, because time is of the essence.
Though desert men once called me God, today men call me mad. For I wag my tail when I am angry. And growl when I am glad.
With pointed fangs it sits in wait. With piercing force it doles out fate, over bloodless victims proclaiming its might. Eternally joining in a single bite.
What do you have when you're sitting down that you don't have when you're standing up?
You use it between your head and your toes, the more it works the thinner it grows.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?