The Original SleekEZ Medium descending tool for dogs works to remove shedding hair, dirt and dander not only from pets but also from furniture, pet bedding, saddle pads, autos and carpeting. The SleekEZ dog descending tool works on any animal year round for removing all expired. Great for animals between 20 and 50 pounds. Compromised of teeny, tiny teeth configured in a unique tooth and wave pattern, the Original works by grabbing at the tips of the hair to extract from the skin without painful tugging. Yes, it does extract shedding undercoat despite the size of the teeth. Hair collects along the blade of teeth in tidy rows before falling to the ground for later cleanup. No need to pull hair from the tool. It just falls into need little piles to the ground. So simple, so effective!