Over decades, Los Angeles scientists pulled thousands of bones out of pits 61 and 67, which preserved tar-stained fossils from around 340 cats. This vast collection allowed the study's scientists to examine a wide map of cat bones, from skulls to tails. Researchers found that the traumas, which included healed fractures and severe muscle strains, appeared in obvious “hotspots” on the cats’ skeletons, clustered on their shoulders and backbones. The most notably tortured area was the lumbar spine. A specific vertebrae here, the lumbar 1, showed trauma in half of the bones observed.