Stories of bullies' super-strong jaws might make great
horror film fodder, but science doesn't support them.
Research conducted by Dr. I. Lehr Brisbin at the
University of Georgia shows that bully breeds don't
show any mechanical or morphological differences in jaw
structure when compared to other dogs -- nor do their
jaws come equipped with locking capabilities.
To explore the question of jaw strength, a 2005
National Geographic study measured force of bite for
several creatures as pounds of bite pressure. On
average, dogs exhibited about 320 pounds of pressure,
while humans came in at 120 pounds and great white
sharks at 600. The study also included a simulated bite
sleeve test with a German shepherd, a Rottweiler and an
American pit bull terrier. The pit bull actually
registered the least amount pressure among the group,
despite rumors that bully breeds can clamp down with an
alarming 1600 pounds of force.
Dave
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