With dogs that aren't too large and athletic or very mouthy, it can work to turn away and ignore the dog- telling the dog that he won't get attention when he is jumping. Standing on the leash also works. I often use a two person technique where one person holds the leash and becomes a post while the other approaches and pets the dog. The moment the dog starts to jump up, the person holding the leash remains a post (no yanking on the dog) while the person who was petting steps out of the dog's reach. As soon as all four of the dog's paws are on the ground the petting and praise can continue, stepping away anytime the dog get's rowdy.

Pushing the dog off, yelling at him or kneeing him is not recommended. Pushing and yelling are often construed by the dog as fun and they often become more jumpy. Shy dogs can be terrified of rough physical contact or yelling. Kneeing the dog or stepping on his paws is painful, can damage the dog physically and will likely also damage your relationship with the dog. So while it's helpful to tell the dog what you don't like by ignoring the behavior, it's even better to tell the dog what you do like such as all paws on the floor. You can also give the dog an alternative behavior that he needs to do in order to get petted. If you sit, I'll pet you! Down works well too. You can't jump when you're sitting or lying down! Using a marker like a clicker or the word "YES!" anytime the dog is doing something you like, followed by a food reward is another great way to help the dog understand what you'd like him to do.

Many dogs like the taste (and smell) of things we humans would find disgusting. Animals that eat plants have much longer digestive systems than meat eaters because plant material is harder to digest. Even with the longer process, some of the plant material horses eat come through in the poop. Try to think of it as dog salad!