Answer:
I am the signature stroll of ducks and penguins
I am a word. I become longer when the third letter is removed.
I help engines spin and pants stay up.
An open ended barrel I am shaped like a hive. I am filled with the flesh and the flesh is alive.
Of the king I am blue and of the peasant I am red. Of the frog I am cold and of the dog I am hot instead. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?