Hip dysplasia occurs when the two bones that come together in the hip joint — the pelvis and femur bones — are out of alignment. The condition can cause misalignment, movement, and flexibility issues ...

A new study reveals saber-toothed cats suffered from hip dysplasia, an affliction common in pet cats and dogs, and points to supportive social structures for Smilodon. You can't spell 'Smilodon ...