Obviously, you want to find a clipper that can do what you want it to do. But you also want to make sure that the clipper is quiet enough so your horse won't be bothered by it. You'll want to pay attention to the noise level as well as the power of the motor. There are a number of different options available to you, from simple hand-held clippers, to electrically powered ones, and some that are even battery operated. If you choose a lightweight clipper, you'll have to clip with one hand, which might make it difficult to hold on to your horse's halter. On the other hand, if you go with a heavier-duty model, you'll be able to clip your horse with two hands.