Answer:
A precious stone, as clear as diamond. Seek it out while the sun's near the horizon. Though you can walk on water with its power, try to keep it, and it'll vanish in an hour.
I cost no money to use, or conscious effort to take part of. And as far as you can see, there is nothing to me. But without me, you are dead.
If you spot one of these eastern warriors, they're not doing their job right.
A red drum which sounds without being touched, and grows silent, when it is touched.
A house with two occupants, sometimes one, rarely three. Break the walls, eat the boarders, then throw away me.
People take me on walks and I run and have fun. What am I?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?