The Propane Model

What does propane have to do with designing stuffed animals?
Well, it just so happens that the propane molecule will serve as the geometric basis for the stuffed animals’ bodies!
The three carbon atoms in the molecule will represent the backbone (BOTH literally AND figuratively) of the animals’ bodies.
The three hydrogen atoms at one end of the molecule will represent the animals’ heads and front legs.
The three hydrogen atoms at the other end of the molecule will represent the animals’ tails and hind legs.
The two hydrogen atoms in the middle of the molecule will represent the wings of SOME of the animals.