Answer:
Dies half its life. Lives the rest. Dances without music. Breathes without breath.
When they are caught, they are thrown away. When they escape, you itch all day.
My life can be measured in hours. I serve by being devoured. Thin, I am quick. Fat, I am slow. Wind is my foe.
We are all around, yet to us you are half blind. Sunlight makes us invisible, and difficult to find
I have four legs but no tail. Usually I am heard only at night.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?