Preheat an oven to 175°C.
Into a mixing bowl combine the brown rice flour and oat flour, stir to evenly mix the dry ingredients.
Then pour in the water, peanut butter, and pumpkin puree. Begin by mixing the ingredients using a wooden spoon or spatula then turn out the mixture onto a work surface.
Knead the dough until firm and tightly come together.
Using a rolling pin roll the dough out to 0.5cm thickness and cut using a cookie cutter.
Transfer the cut dog treats to the oven trays lined with parchment paper.
Repeat until all of the grain-free peanut butter dog treats are cut, then place the trays in the oven and bake for 30 minutes.
Remove the baked treats from the oven and allow to cool. Store in an airtight container at room temperature for up to 1 week or in the refrigerator for up to 1 month.