You should switch it to a Gnoll with a more hyena like head, rather than the more doglike ones, but meh, it's still great! Hyenas do exist in WarCraft, and are the Centaur's favored pets, so they would work well in Centaur Creep camps for custom melee maps or campaigns true to WC lore.
shoulders need to arch more... needs more of a mane... improve ears... make ahead a bit more hyena-like. Make back legs shorts... w/ very little bend... and leave front legs as they are depending on the type of hyena of course...
Werewolf model uses wolf unwrap (Quite obvious and basic unwarp with everything layed out). This uses the gnoll unwrap (Everything crushed together to save space). Oh, and WoW hyenas are EVIL. Hence why I made this. Fits in nicely with Murlocs as well, both of them are evil after all...
But yeah, I should have made it less muscly. Ah well, only 94 kilobytes, and thats WITH the duplicate skin that I had to include. Nice and small
A fun little modification. The use of skins nicely mirrors the existing wolf units. The body seems a bit muscular; hyenas are generally portrayed looking starved.