title: Is it possible to embed animated GIFs in PDFs?
body: <p>Is it possible to embed animated GIFs in PDFs? And how might I go about such a thing? are there any dangers I should be aware of?</p>
  <p>For some more details on why I think it's a good thing and how it helps <a href="https://joereddington.github.io/2014/04/18/animated.html" rel="noreferrer">feel free to see this post</a>. I didn't think it was appropriately well-formed enough for SE.</p>
  <p>As an example - I'd like to put this into a description of quicksort:</p>
  <p><img src="https://i.stack.imgur.com/vZRiQ.gif" alt="quicksort animation from wikipedia" />
  <br>
  (This animation is from <a href="https://commons.wikimedia.org/wiki/File:Sorting_quicksort_anim.gif" rel="noreferrer">wikimedia</a>.)</p>