Answer:
A dark-colored creature serenaded by Lennon and McCartney.
I have a powerful bite and live in rivers and swamps. People are often afraid of my big jaws. What am I?
What animal always goes to sleep with his shoes on?
What follows a dog wherever it goes?
I am known for my long trunk and large ears. What am I?
I am the kind of an ant that's good at math. What am I?