Answer:
John Lennon sang about being this toothy creature.
I am a bird but I cannot fly. I'm the fastest runner of all birds. What am I?
I am a rodent that people sometimes keep as pets. I love cheese and have a long tail. What am I?
I can 'fly' underwater and have eight arms. What am I?
What bird is always unhappy?
What is so fragile that saying its name breaks it?
Animal
Difficult
Easy
Food
Funny
Kids
Logic
What am I?