Bite force: Grizzly bear

As I expected the grizzly bear had the largest bite force of the three predators.  its bite force is equal to 8,000,000 Pascals or 1,160,302 pound-force/square inch [lbf/in squared].  this is enough pressure to crush a bowling ball. probably due to their large heads and muscles located there.  even though they do not hunt for dear or elk very often they do fish for most of their meals and the powerful bite prevents the fish from slipping away.  it may also be used in aserting dominance between male bears when they fight over territory or a female.

bite force: cheetah

the bite force of a cheetah is about 472 pounds not very impressive for a big cat. this is an average bite force of a domestic dog.  i believe that the bite force is so weak because of the small skull and large nasal passages making the skull weaker than most big cats.  the cheetah makes up for the weak bite by going after the throat of its prey biting into the wind pipe or slicing arteries in the neck.