Answer:
What peels like an onion but still remains whole?
If a dog were filling out a resume, he might list his mastery of this game under "skills."
What scientists might call your pooch.
What animal has no wings, but yet will fly?
What build its house with earthen string and ensnares its prey with a biting sting?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.