Answer :
Snake
Faster than light
Colors of green
Striking those who dare get to close
Slithering towards their next meal
Executing with its deadly toxins
Sneaking between rocks
Carrying its prey in their deadly hold
Swerving away from any danger
Making it home with a jaw full of rodent
Being greeted by their family
(I don't know if this is what your asking for but I saw snake poem so I went for it.)