Answer:
Soft and cuddly I'll pull on your heart. But take my last name and I'll tear you apart.
I am a busy worker who is a water mammal.
With a halo of water and a tongue of wood; stone as skin long I stood.
I march before armies, a thousand salute me. My fall can bring victory, but no one would shoot me. What am I?
I tremble at each breath of air, and yet can heaviest burdens bear. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?