Riddles: What am I?

No legs have I to dance,
No lungs have I to breathe,
No life have I to live or die
And yet I do all three.
What am I?
Answer:
I am a fire.

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I have three letters, and I read the same forward and backwards. I rhyme with a word that is important to everyone. What word am I?
Answer:
Eye (rhymes with ‘I’.)

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With pointed fangs it sits in wait,
With piercing force its doles out fate,
Over bloodless victims proclaiming its might,
Eternally joining in a single bite.
What am I?
Answer:
A stapler

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A box without hinges, key, or lid,
Yet golden treasure inside is hid.
What is it?
Answer:
An egg

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I walk on,
Four legs in the beginning,
Two legs in the middle,
Three legs in the end.
What am I?
Answer:
Man — four legs as a baby, two legs as an adult, three legs as an elderly with a cane.