Help! Buster is 2 1/2 years old, weighs 92 pounds and is an avid jumper. We have tried what we think is everything to alleviate the problem (i.e. treats for not jumping, temporarily leashing to doorknob when visitors come, water spray bottle, which he thinks is a game, putting him in a sit when people are walking by, etc.) Buster is great besides this one irksome behavior. He certainly means no harm, but it is not cool when he jumps on my 80 year-old mom., or on a child. Sometimes he won't jump and than other times it comes out of nowhere. In a sense it is a bit unpredictable. He doesn't jump on me because when he used to I turned and ignored him. This isn't effective when he's out in public, because he is so cute. People can't seem to stay away from him! Perhaps this is just an age issue? We have had him in obedience training. Our last boxer, Sugar Ray, was also a jumper, but not on people. He just liked jumping wildly in the air. Any suggestions would be greatly appreciated.