Horse.
The skeleton of a horse is adapted for strength and speed with long limbs for ground clearance and fast running. In contrast, a rabbit's skeleton is adapted for agility and jumping, with shorter hind limbs and elongated hindfoot bones for powerful hopping. Both skeletons have features that enable efficient movement for their respective modes of locomotion.
Depends on how the horse killed the rabbit. Did the horse go carnivorous all up on that rabbit or was the poor rabbit just in the way of a hoof and got punted into the next city?
As fast as the horse can run.
Horse
yes very fast
both of them are fast
a horse has the same digestive system as a rabbit
some of them do
well my rabbit loves dog food so i think in rabbit food there is horse food
really fast
The opposite of rabbit could be something like "predator" or "hunter".
Running birds e.g. Ostrich can run fast comparable to horse in a desert .