Answer:
Who is your mother's only sister's son's brother's aunt's daughter's sister's father?
Deep, deep, do they go. Spreading out as they go. Never needing any air. They are sometimes as fine as hair.
In your fire you hear me scream creaking and whining yet I am dead before you lay me in your hearth.
I can be simple or I can be complex. I can be found in this riddle or in everyday life. I can be shapes or even colors.
Sometimes I fly as fast as the speed of light. Sometime I crawl as slow as a snail. Unknown until I am measured but you will certainly miss me when Iām gone.
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