7 month Puppy

Question
Hi, My golden is 7 months old, we have had him since Christmas time, and because I am the only one in the family that does not work during the day I take care of him the whole day! I thought with me being around him all the time that he would like me and respect me alot! But I was WRONG lol.. Right when he wakes up and goes outside then comes back in, he is all over me... he just bites on my arm and humps me like CRAZY!, he has being doing this alot latley ever since his Adult teeth have grown in, and it hurts alot now! My girlfriend can come over and he does the same thing to her, even worse most of the time... I have tried everything, closing his month and yelling no bite, but when I let go he gets even worse and bites more and more... I love my dog but this is getting bad latley, I'm afraid my girlfriend will not wanna come over again if he keeps on acting up like this...lol..Do u have any idea when this bitting and humping will stop? In all he is a smart puppy but this acting up is making him look bad  can u please help me Thanks Steve

Answer
Neuter him if not already.  It is no cure all, but makes it easier to correct behavior problems.  If he was neutered recently, it may take a little while until the hormones wear off before you see much improvement.  That alone will not correct the problem.  He is biting you and humping you because he considers you a litter mate.  The humping is his way of showing he outranks you and your girlfriend.   

Having a good pack structure reduces such problems.  The dogs see all the
people and dogs in the household as a pack with each having their own rank in
the pack and a top dog.  Life is much easier if the 2 legged pack members
outrank the 4 legged ones.  You can learn to play the role of top dog by
reading some books or going to a good obedience class. A good obedience class
or book is about you being top dog, not about rewarding standard commands with
a treat. Start at http://www.dogsbestfriend.com/

Young Labs, which I know best, and other puppies tend to very bad about
biting.  You see a litter of them, and all the ones that are awake are biting
another one or themselves.  I am not even sure they realize that when they are
alone, if they quit biting, they would quit being bitten.  At 3 to 4 months
they are getting their adult teeth, and it seems they spend every waking
moment biting or chewing.  I maintain a Lab's favorite chew toy is another
Lab.  Otherwise they settle for any person they can.  They keep hoping to find
one that won't yelp and jerk their hand away, or growl "Bad dog." and clamp
their mouth shut.  Then offer a chew toy.  They keep trying despite hundreds
of corrections.   Another good technique is to quit playing and go away.   Be
sure to praise them when they are playing nice and not biting.

You just have to keep on correcting them, hundreds of times, not dozens.
Provide sturdy, safe toys such as Kongs and Nylabones.  Avoid things they can
chew pieces off and choke on them.  Keep them away from electrical cords.
Crates are essential for most young Labs and other dogs.

The pet stores are full of toys that many dogs will quickly chew up into
pieces they could choke on or cause intestinal blockages.  If you are not
there to watch, stick to sturdy stuff such as Nylabones and Kongs.  Keep a
close eye on chew toys and quickly discard anything that is coming apart in
pieces.  Rawhide is especially bad because it swells after being swallowed.
These problems are the worst with, but not limited to, large, aggressive
chewers such as Labs.

Ropes from the pets' store quickly turn to hazardous shreds.   Ones I made
lasted much better.   Go to a hardware or home center that sells rope by the
foot.  Buy 2' of 3/4" poly rope.   Melt the ends, and tie  knots in it.   Get
them as tight as possible, put it in a vise and pound it with a hammer.  Watch
carefully, and be ready to discard when it comes apart.

Now would be a good time to switch him to an adult chow.  It has nothing to do with his behavior, but slowing his growth and allowing more time to develop sturdy joints.  Keep him lean too.  Here is a good guide, http://www.puppychow.com/products/popup_body_condition.aspx