Giant breeds are considered to be any pet over 100lbs. We are able to manufacture a cart to support a dog up to 235lbs. With dogs of this size, what you need to consider is "Am I going to be able to lift the rear of my pet and place its legs down through the supportive leg rings?" If the answer is yes and provided he meets the criteria for Evaluating Your Pet, then there is no reason why a K-9 Cart will not work for your pet.
