First, start a good NILIF program: http://www.petpeoplesplace.com/Care/Dogs/017/02.htm Deb McKean has one of the best articles I have ever reas on this and I actually refer more people to it than I do my own! LOL!!! The is better and more humane than yelling which can cause more issues down the road. Second, enrichment and alleviating of boredom. http://www.petpeoplesplace.com/Care/Dogs/003/18.htm Often not enough exercise and in younger pups or the opposite too much stimulation when they are overtired (I put pups down for naps just as I do children) can lead to undesired behaviors. I call it Sleepy Silly. The pup just gets overexcitied and wired and out of control. Your tone – you want pup calm and cool, you remain calm. Using an excited voice to calm is counter productive. But again, go and read the first URL on this site that I gave to NILIF. I have used this concept for many years with various ages, types, etc of dog and even humans – it works great! (many good trainers and behaviorists have their versions of it and if properly done, is far better than more "traditional" punishments and forms of discipline.) If you want pup exicted, you get excited. You want calm, you be calm. You want certain behaviors to stop, you NILIF. Now, enroll in a GOOD puppy training program that covers basic manners and such. Avoind the ones at large pet superstores. They are too over stimulating for a beginning pup, too much distraction for a beginning dog and really just not a suited environment for the beginning stages of learning and socializing. Go to http://www.APDT.com (association of pet dog trainers) and find a member near you. http://www.petpeoplesplace.com/Care/Dogs/003/19.htm (a few things to look for in a training program) The vast majority of out of control puppies comes directly from the owner. I deal with this complaint often. If you get yourself trained and better understanding dogs and pups, things will improve. And get control NOW. When he hits adolescence, that is a whole other ball of wax! ;D