While the Otyugh stuff is on hiatus (I need to do some more scribbles of it's internal structure), here's a pic of a Gnoll...
... and a Bulette:
I like the Bulette because, as with the Otyugh, it's a bit of an oddity. Mind you, I've not put much thought into getting the details right (i.e. the armoured bits). It's just interesting to play around with as a design. If anything, I need to stress the 'armoured armadillo' vibe of it some more.
As for the Gnoll, it's another D&D creature that I find interesting. They're a bit more uncouth and raggedy than your average Orc, Kobold or Goblin. The only problem area with design is how much the neck should extend from the shoulders. The hyena-like features would suggest a longish neck, but I'm not sure yet if it looks right. I think I need to do more studies of hyenas to get my Gnoll looking less like a dog.