The reason why the dog only smells but does not match may be due to timidity or unfamiliarity. You can let the two dogs get along alone for a while and wait patiently. Generally, if the male dog is young, has no mating experience, or the female dog is aggressive, it will also cause the dog to be unable to complete mating. It is best to wait until the dog is over one year old before mating, so the success rate will be higher. If the female dog reacts strongly at first, Let the two dogs get familiar with each other slowly before mating.