Answer:
John Lennon sang about being this toothy creature.
Even if my life is taken eight still remain.
Creeping on its belly, curled into a ring. Eyes forever open, beware its lethal sting
Microparasite expert at sucking the blood of mammals and birds
Slithery critters with a taste for dirt.
What age most travelers have?
Animal
Difficult
Easy
Food
Funny
Kids
Logic
What am I?