Yes, you can embed any of your application URL's in an iframe on your website using the code below, replacing the URL in bold with the URL for the application you want to display: 

<iframe src="https://www.shelterluv.com/matchme/adopt/TST/Cat" style="width: 800px; height: 600px;"></iframe>

If needed, you can adjust the width and height of your iframe by changing the width and height settings shown above, this website has additional detail that might be helpful to read through as well.