This motif comes from an Estonian mitten pattern. You can see the mittens here. Muhv has graciously permitted me to copy her combination of traditional stitch patterns for the cuff she added to her mittens.
Creative Needles: artistic cat socks for happy feet. Free Knitting Pattern for Yinyang Kitty Socks - Toe-up ankle socks with a kitty chart on the toe and foot and a simple short-row heel. Designed by Geena Garcia