Answer:
My first is twice in apple but not once in tart. My second is in liver but not in heart. My third is in giant and also in ghost. Whole I’m best when I am roast.
I look at you, you look at me, I raise my right, you raise your left.
My first half is normally made of stone, my second is crazy, and I taste sweet when complete.
I climb higher when hot, But beware my rage, I’ll kill with a breath, If I can escape my cage
I have legs but never walk, I may have flowers but no soil, I hold food but never eat.
Break me and I am better immediately set and harder to be broken again.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?