Answer:
I have a shell and move very slowly but I don't live in the sea. What am I?
A blackbird similar to, but much bigger than a crow
I grunt and have a curly tail. People say I'm dirty but I'm actually very clean. What am I?
When it was young, it had a tail. When it grew up, it had knees
What grows up while growing down?
What made Cyclops quit teaching?