My 14 wk old boxer puppy is gaining in confidence every day. He is generally good and housetraining is going ok. Now the problem is when he starts to "play" and nips. I dont think hes being agressive, but playing, but im not sure how to teach him right from wrong. If i shout "no" he barks at me and even jumps at me and this seems to make him worse. Ive tried ignoring him but he just carries on having a tantrum, how should i be handling this??? 

Read HERE - rather than shouting it is better to keep a consistent method of dealing with this normal puppy behaviour.  I find "ah!ah!" in a firm low tone to work best with pups which are too excited whereas less OTT characters may respond better with a high pitched "yelp" - mimicking a littermate :)

Whichever method works for even a nanno second, as soon as he stops mouthing/nipping/savaging (OK, kidding with the last one :-D ) you then distract him onto a toy before he gets the opportunity to bark or jump at you.  In doing that he's basically continuing 'the game' - as with all games it should be us who control them and call time :)

This phase passes thankfully but will pass all the quicker if you are consistent and ensure other household members are too.

best wishes, Teri

I currently have the same problem with my 15 week boy
He mouths more than any pup I've ever owned; even his breeder described him as nippy. He is really excitable and just can't control himself at times.

I find staying calm really helps raising my voice would definitely excite him more. I also find walking away really does work, although it's is not always easy with him nipping at the backs of your legs, he hates being ignored so does get the message. My children turn their backs and cross their arms when he starts which also works well. I also try heading it off as much as possible I find if I ask him to sit he is much less likely to nip and offering him a treat before he nips often diffuses it. If he really gets excited I find a short time out in another room really helpful, it gives us both time to calm down.
My boy has improved a lot since we picked him up and it is only a real problem when he is over excited now. Some times you can tell he is struggling not to bite, he'll have his mouth open and you can see him battling the desire to nip, most of the time he now manages not to

Puppies want to please us it's just harder for some than others. Try and be patient he will get over this with time. As long as he knows what is expected of him, he will eventually make the correct choices.
A large glass of wine in the evenings may help while he figures it out. (for you not the dog)

hey fellow boxer pup owner.....my boy is now five months and thank goodness all those needle teeth are now gone!!!
He went through a stage of biting and nipping constantly but it was only with me and not my other half.
I turned my back on him and said "that's enough". He still carried on biting the bottom of my jeans for a while but I completely ignored him and if he jumped up I turned my back on him and carried on ignoring him. It took a while but eventually he grasped it. Now when he gets too excited I only have to say "that's enough" and he stops. He'll push it on occasions but hey, he's a Boxer and we all know how stubborn they are!
I know some people aren't fans but with the barking I use a squeezy bottle with water in. When Nero was about 18weeks he went through a stage of barking if I was watching TV, nothing stopped him. Eventually I tried the water bottle and I only had to squirt him with a tiny amount and it stopped. A couple of times after that I went to get the bottle and he stopped and now he doesn't do it at all.
They are great fun so stick with the training and don't give in to those big brown soppy eyes!!!

Thanks for all your advice will give your ideas a try!

A very experienced breeder advised me to give an exaggerated yelp, as if in pain, if the puppy nipped me too hard while playing.  If the first yelp doesn't stop them, yelp when they go in the next time.  They soon get the message.  It's how they learn when they're with the other puppies in the litter - if one is too rough and hurts another, the "victim" will yelp, and likewise with your puppy - if he was hurt he would yelp so they really get it and it's stress free for everyone.

Hope it works for you!