Answer:
I run through hills. I veer around mountains. I leap over rivers and crawl through the forests. Step out your door to find me. What am I?
David's father has three sons: Snap Crackle and ?
In my life I must bare my bloodline I must share.
I am all around you but you cannot see me. I have no throat but you can hear me. Valued during summer but despised in the winter.
With three eyes and as black as night I frequently knock down ten men with a single strike!
you hold my tail while I fish for you