Answer:
You seek it out, when your hunger is ripe. It sits on four legs, and smokes a pipe.
Two bodies have I, though both joined in one. The more still I stand, the quicker I run.
I have a tongue, but do not talk. I follow close, but neither run nor walk. Coupled and hitched, but never married. You couldn't bear the load I've carried.
Lighter than what I am made of, More of me is hidden Than is seen.
I drive men mad for love of me. Easily beaten, never free.
I start with T end with T and within me is T.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?