Answer:
A skin have I, more eyes than one. I can be very nice when I am done.
Take one out and scratch my head, I am now black but once was red.
What can be measured but not seen?
They have not flesh, nor feathers, nor scales, nor bone. Yet they have fingers and thumbs of their own.
Die without me, never thank me. Walk right through me, never feel me. Always watching, never speaking. Always lurking, never seen.
It rows quickly with four oars but never comes out from under his own roof. What is it?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?