It is so common to see a puppy and as it runs up to you it jumps up on you. It is so much more tolerable due to the fact of how cute the puppy is then when it is a grown dog. The idea to take into factor here is the dogs respect level. Jumping up on humans is due to a respect level the dog has with the human nature.
If you ever notice a puppy does not jump up on another dog that he first meets. The meeting starts with the puppy sort of crouched down and steadily crawls to the big dog. This is because the puppy knows the different mature levels …