Answer:
My first master has four legs, my second master has two. My first I serve in life, my second I serve in death. Tough I am, yet soft beside. Against ladies cheeks I often reside.
A nut cracker up in a tree.
You heart it speak, for it has a hard tongue. But it cannot breathe, for it has not a lung.
I always follow my brother but you cannot see me, only him. You cannot hear him but you can hear me. What are we?
Describes universities like Harvard and can be poisonous.
The warmer I am the fresher I am.