Rub a piece of 150-grit sandpaper over each bite mark. Your goal is to rub out the indentations of the teeth using the sandpaper. Go slowly, using the edge of the sanding block.
Wipe down the leather boots with a tack cloth to remove the dust from sanding. Add a tiny amount of leather shoe conditioner to the bite marks on each boot. Rub in the conditioner with a lint-free cloth and buff it in. Allow it to penetrate for at least 30 minutes.
Dab a small amount of shoe polish onto a lint-free cloth and buff the shoe, rub it in using circular motions. The sandpaper should remove the indentations and the shoe polish will cover any discoloration.
Buff the shoes to a shine with a clean cloth.