A very common behavior problem that people deal with is jumping up on people to greet. Most puppies and dogs jump on people out of excitement, friendliness, and as a means to seek attention. Inadvertently, people pay attention to a jumping puppy by pushing her off, by making eye contact, and/or by petting her. Most of your houseguests are being polite by telling you they do not mind, when, in fact, they really do. You must teach your dog that jumping is not a way to greet humans or get attention. This is important regardless of the size of your dog -- 4 muddy paws are still 4 muddy paws!