Answer:
I'm sometimes white but most often I'm black. I take you there but never bring you back.
Never ahead, ever behind, yet flying swiftly past, for a child, I last forever, for adults, I'm gone too fast.
you hold my tail while I fish for you
I am the noise Santa's reindeers make
I am milky white and scares people.
Give it food and it will live, give it water and it will die.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic