title: PIL remove background image from image
body: <p>With a background image, would I be able to remove that background from another image and get all of the discrepancies? For example:</p>
  
  <p><a href="https://i.stack.imgur.com/HHtLf.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/HHtLf.jpg" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/m9Dd3.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/m9Dd3.jpg" alt="enter image description here"></a></p>
  
  <p>Pretend I have these two images saved. How could I remove the first picture from the second picture while keeping all of the cats?</p>