Answer:
A tasty reward given to well behaved dogs and kids
You use it between your head and your toes, the more it works the thinner it grows. What is it?
It's shorter than the rest, but when you're happy, you raise it up like it's the best. What is it?
What goes up let's of a load and come back down
Watches students at the prom to make sure there's no funny business.
When is it bad luck to see a black cat?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?