Answer:
What can run but never walks licks but never talks has a bed but never sleeps has a mouth but never eats?
You use me between your head and your toes the more I work the thinner I grow.
Cold head and feet; round as a ball; always turning around myself.
I am the word that has three syllables and twenty six letters.
Soft and cuddly I'll pull on your heart. But take my last name and I'll tear you apart.
I flow from the Homerβs mouth when he sees doughnuts.