The follow-up pic to 'Partytime', done after a really nice reply from 'Partytime' was posted to the newsgroup.  The major change in position is the gryphon is now mounting the unicorn, whereas in the first pic he was humping the vixen (he was able to freely switch between the two while going at it; he just happened to finish off in her :).  I think the buck in this pic is one of the best I've done :)