<div class="dog">
  <div class="dog-body">
    <div class="dog-tail">
      <div class="dog-tail">
        <div class="dog-tail">
          <div class="dog-tail">
            <div class="dog-tail">
              <div class="dog-tail">
                <div class="dog-tail">
                  <div class="dog-tail"></div>
                </div>
              </div>
            </div>
          </div>
        </div>
      </div>
    </div>
  </div>
  <div class="dog-torso"></div>
  <div class="dog-head">
    <div class="dog-ears">
      <div class="dog-ear"></div>
      <div class="dog-ear"></div>
    </div>
    <div class="dog-eyes">
      <div class="dog-eye"></div>
      <div class="dog-eye"></div>
    </div>
    <div class="dog-muzzle">
      <div class="dog-tongue"></div>
    </div>
  </div>
</div>

<div class="ball" tabindex="0"></div>