This pattern will eventually go up for sale. If you really want to make a hippogriff instead of a griffin, you can buy this pattern and then switch out the rear legs and tail for those of the smaller MLP-pony (as soon as I get that pattern up). This pattern is now available for purchase! (Still no smaller MLP pattern ^^a) You can also buy a white griffin :)
Jig the Goblin, from jimhines' series of the same name. As a reminder, the pattern for Smudge the Fire-spider can be found here, though he's almost big enough to eat Jig at this scale.