This pattern is written using US terminology.
In addition to yarn you will also require 9mm toy safety eyes, or alternatively you could use some black yarn to stitch the eyes on.

Dusty sits at about 9 inches tall, but you can use any size hook and yarn you like, so long as your stitches are tight.

Only 2 colours of yarn needed, and a small amount of black yarn to stitch on nostrils.

The pattern uses sc, and the double loop single crochet stitch.