Answer:
What wears a coat in the winter and pants in the summer?
I am a mammal that lives in the sea. I have flippers and am known for my intelligence. What am I?
Microparasite expert at sucking the blood of mammals and birds
This small creature kills even the largest one.
What always goes to bed with its shoes on?
The 8 of us go forth and not back to protect our king from a foe's attack. What am I?