Answer:
I start with an E end with an E and have a letter in me.
I run smoother than any rhyme I love to fall but cannot climb.
I am the signature stroll of ducks and penguins
What is black when you buy it, red when you use it, and gray when you throw it away?
Though it be cold, I wear no clothes. The frost and snow I never fear. I value neither shoes nor hose and yet I wander far and near. What am I?
When someone uses this acronym, you know you've got to pick up the pace
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic