A real neat hoof knife is a simple mountain man style folder made with a horseshoe bent in half to form the sides. The curved hoof blade fits right in the curvature of the half-shoe. For those not familiar with a hoof knife, it is slightly curved ( bent) to one side - sort of a spoon shape. Google "Hoof Knife" and you will see what I am saying. There are many shapes of hoof knives, so don't feel that your knife is "wrong".
A basic tutorial is:
Forge a pony shoe, bending it in half. Slip a piece of 1.25-1.5"X1/8" steel in between the halves, and forge the shoe out to have the sides even. Forge the shoe out to get the knife profile you want,curving it to one side. The down curved end is the pivot end, and the U shaped straight end gets the sideways curve. The piece of steel that has kept the halves apart up to now will be ground into the blade ( and will fit since it was forged along with the sides). You can use spacers and rivets through the nail holes, make a spine, or just use one stop pin. Drill the pivot hole. Shape the hoof blade to your desired shape.There should be a "tongue" sticking out ( like a straight razor) that is shaped to nestle into the frame when the knife is fully opened. Peen the pivot, or use a pivot bolt.
Nothing fancy, but sort of neat. The blade doesn't really need to be all that sharp since it is used mostly for scraping out the frog and sole, and trimming the hooves for shoeing.
You can get fancier and add a tempered spine and make a friction folder if you wish, but this simple style is a classic.
When I can get out into the forge, I'll try and forge one of these to show what it looks like. I won't be out there for at least two weeks, as I am in the beginning of building out a new store location.