Answer:
They can be harbored, but few hold water. You can nurse them, but only by holding them against someone else. You can carry them, but not with your arms. You can bury them, but not in the earth.
Forward I’m heavy, but backwards I’m not.
Weight in my belly, Trees on my back, I travel fast in my place, but feet is a feature I lack
Walk on the living, they don't even mumble. Walk on the dead, they mutter and grumble.
Just head and foot yet never tires of dancing.
I can only be played on a windy day
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?