Answer:
What's as small as a mouse but guards a house like a lion?
What is up that’s also down? What’s a smile and a frown?
Known to accessorize with feathers, trumpets, and harps.
At first, I am nothing. Add something to negate. Add again to oppose. Add again to find the time to draw. Add once more to find nobody at all.
Name for zenith
What scientists might call your pooch.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?