Complex sentence: Pit bulls also have wide skulls, well-developed facial muscles, and strong jaws, and some research suggests that pit bull bites are particularly serious because they tend to bite deeply and grind their molars into tissue.
Split into simpler sentences: Pit bulls also have wide skulls, well-developed facial muscles, and strong jaws. Some research suggests that pit bull bites are particularly serious because they tend to bite deeply and grind their molars into tissue.