Hope I got the rules right, so here we go...
Inspiration: Well, I like monsters and their designs. I love Alien, Cthulhu, and the monsters of Hellboy. I really like deviating from the norm when designing something and tries to be a bit different from the common perception of things.
Took the eyes out because I don't want my hellhound being distracted and leg-hump on his free-time lol. Expanded his ears and tongue to compensate from the blindness. Now he'll be able to chase what I need him to chase. Burnt most of his fur and put some skin disease to give it the appeal that it was transformed by hell and not a native there. Longer and more vicious tail for further enhanced chasing.
Hope you guys like it!
Pic links: http://imgur.com/a/for9o