I have no idea how they do this:
TYPE IN a command and see what happens... sit, roll over, down, stand, sing, dance, shake, fetch, play dead etc. and...it's also very cute if you type in a command that's not recognized...!!
Make sure you type in "Kiss" too, but do it last.

Click here: I Do Dog Tricks
(For some reason, I can't get the post to link the text, so if you don't see a link above, just click this link:
http://www.idodogtricks.com/index_flash.html )