Answer:
No matter how little or how much you use me, you change me every month.
Keep doing me to avoid lens dryness
I start new then become old. Start clean but become dirty. I usually start big then become little. What am I?
I can be hairy and itchy all over. I can be the scariest thing you have ever seen. I stand in the middle of nowhere, hanging on a stick. What am I?
What goes all around the world but never leaves its corner?
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk