Answer:
The signature stroll of ducks and penguins.
I have a shell and move very slowly but I don't live in the sea. What am I?
With four oars it swims but it is always at home. Its back is like armor, tougher than chrome. What is it?
I am small fluffy and love to chase mice. I purr when I am happy. What am I?
Disgusting creatures that would survive a nuclear strike.
I am easy to waste and unstoppable