R2L, we used warm to hot water in the cold months and cool water in the warmer months. Using warm to hot water was to help break down the fibers in the feed. That was one thought on it.

I figured a dog would like a warm meal in the Winter and a cool meal in the Summer. In the winter a hot bowl of Oatmeal with a slab of butter helped me face those windy cold days. While hanging off a telephone pole. LOL Cheers