new horse owner

Question
I have just bought a appy stud (drifter)is his name
he is 4 years old. He is broke to ride but had not been
Ridden n a few months before we got him. when we got him home
We decided 2 give him a few days 2 adjust to his new home every
Day I go out 2 feed groom and just talk and pet him. After a few days
We saddled him up and I got on only had a few problems with him
Throwing his head around while rideing n the round pin. then
My husband tried to get on and drifter tried biting him and
Any thing else he could to get him off. And now that a few weeks have
Gone by he is doing well with me I can sit n the stall with him
And he will just stand next 2 me rubbing his head on me. But
When any one else trys 2 mess with him with out me there he has tried
To hurt them. What can I do to help break him from it?? And he is
Also very protective of me he runs the other horses away from
Me and even the dogs if they get to close while I am around him what can I do?

Answer
First off, I recommend gelding this horse.  All of the rubbing and sitting in the stall with him is putting yourself in danger, and anyone else.  You will be unable to break him from his behaviors as long as he remains a stud.  

If you continue to let him run other horses away, and the dogs, it will not be long before he is putting you in your place too.  That is coming.  He is being disrespectful, and is well on way to becoming dangerous, if he isn't at that point already.

Stallions are not for the inexperienced, as they can kill you quite easily.  I have known studs to grab a human in the throat, tearing out the jugular vein, or grabbing trainer by biceps and whirling him around and around in the stall, until the man's arm was almost torn from his body.  Other stallions, have attacked trainers, pinning them to ground with forearms by kneeling on them and biting them in head and face.  Stallions are unpredictable, and these all were stallions that were being handles by horsemen and women who had been working with horses for years and years.

The fact that he feels free to bite your husband does not bode well at all.  He can easily rip off your husband's face, or yours for that matter, in a heartbeat.  Other dangers with a stallion are that he will rear up and drop his forelegs over your shoulders as he would do to mount a mare, and knock you down to the ground, or worse, break your back when he does it.

I am being honest here when I say you are over your head with this horse.  The petting and being nice to him, is only going to add to the problems you are already having, and may end up escalating them tremendously too.  

No horse should ever, ever feel like it can attack a human, or behave in any manner that can be termed threatening, to allow this, is to set yourself up for someone getting seriously hurt.

And the rubbing the head on you, is not affection, it is a sign of dominance, and should never be allowed by any horse, but especially this one.  

And do not put the two together, as he may well kill your gelding, or transfer his allegiance to the gelding, and kill whomever goes into the pasture.  

The longer you let this horse dominate you or your husband, dogs, or other humans, the harder it will be to deal with him, and the longer he remains a stallion the worse he will be.  You need to geld him before hot weather comes, or better yet, ask whomever you got him from to buy him back, and find something safer and a gelding that is gentle to ride.

I'm 56, and have been around horses all my life, so did not write any of this lightly, as I have worked at breeding farms, and with all breeds of horses that are common in US, so am very well aware of what stallions can do, as well as horses in general.

Please don't continue with this horse, as it will not end well.

Wish I had something positive to say, but there just isn't anything.