The coat you first pictured is pretty short and I would suggest a weekly brush on it. What you may not see in the picture is that you may need to trim the foot pads otherwise lots of dirt & water will be tracked in and the hair between their foot pads can make it slippery. Dogs have 2 types of sweat glands. The first type is called merocrine glands. These are located in the foot pads of dogs (and cats) and function to help cool the animal. The second type is called apocrine glands. These are located on most of the rest of the dog (and cat) but they do not function to cool the animal. Their purpose is to release pheromones. Keeping the foot pads trimed of hair helps them stay cooler. Also trim near the eyes to keep bacteria down. Personally I wipe the "eye boogers" and muzzle with a warm wash cloth every morning with a longer face. Always wiping down away from the eye and muzzle. You don't want to train the hair to grow toward the eye if you wipe that way. Also keep the mouth trimmed up so that the hair is not caught in the eating process and reduces bacteria that can cause other problems.