Answer:
What has a ring but no finger?
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.
*forward* *backwards*is what I do all day. I come in all different shapes and sizes. I can be scary and I can calm you down.
What do people spend a lot of money on every year, but never want to use?
What do you call a pig that is no fun to be around?
No matter how little or how much you use me, you change me every month.