I remember one study noting that when Neanderthals made necklaces, they tied the beads together by the tops, while Homo sapiens drilled holes in the beads to more securely hold them. Neanderthals apparently never learned this.
Neandertal never ate fish, and that's why they went extinct -- oh, wait, someone finally actually studied the strata and found out that Neandertal did eat fish. But vegetables, N didn't eat, oh wait, N invented vegetable soups. But N couldn't speak because *it* didn't have a hyoid bone, and, oh, now wait, now we've found hyoid bones (which are so fragile they and not found in most remains of great age). The point is, this cave art research is new, and blows away another silly manifestation of bias against Neandertal.