Named after their cute folded ears, Scottish Fold cats have a unique look. The folds are produced by a gene that affects ear cartilage, but because the gene isn't completely dominant, not all Scottish folds have folded ears. Either way, these cats are adorable. The original Scottish fold was a barn cat in Scotland that was bred for its distinct folded ears throughout the United Kingdom in the 1960s. Now, they're popular pets among celebrities across the globe, including American singer Taylor Swift.