My in tact male 18 month old Lhasa apso jumps a lot when visitors come - at them, bouncing from couch to couch, generally overly boisterous. He calms down after a while but it's tedious. Not everyone likes it and with our new baby in the house I'm scared he is going to jump and land on him one day. I shout when he does it to no avail. Has anyone any tips how to train this behaviour out of him? Tia.