@each $animal, 
      $color, 
      $cursor in (puma, black, default), 
      (sea-slug, blue, pointer), 
      (egret, white, move) {
  .#{$animal}-icon {
    border           : 2px solid $color;
    background-image : url('/images/#{$animal}.png');
    cursor           : $cursor;
  }
}