Scaling their model up to a shark 21 feet long and weighing 7,300 pounds — akin to the largest of living white sharks — they found that such
an animal opening its jaws to a 35 degree angle could squeeze its prey with almost 4,000 pounds of force.
Other owners may detect a problem while their
animal is lying on their back with their mouth
open in a position where their tongue falls away from the bottom
jaw.