This pattern was done with the 44 peg 1/2 gauge loom but is written for 36 and 41 peg loom as well as the 59 peg 1/2 gauge loom.
It was done with Lions Brand Hometown USA yarn, you will need a skeing of brown and a skein of grey, plus skein of white for horns.
This is mostly color changing pattern not too bad an experienced beginner pattern would probably be fine.