New dog, how do I introduce him to my old dog?

So I got a new dog, he's about 10 months old. His name is Axel..
I have a black lab who's about 3 years, who's name is sam. we thought he was going to be the aggresive one.

But Axel is the one getting mean... And at the shetler it said he got along with other dogs.
He's always trying to hump Sam, and then that when Sam gets annoyed and barks and lunges toward Axel.

Axel is the one neurtered...
Sam isn't. So, I dunno what's up with that whole thing.


So how can I introduce them?
And have anyone of you expirenced this sort of thing?
Did the dogs get along later??


Thanks...

 

For some reason, altered male dogs are often aggressive towards unaltered male dogs. It has to do with feeling threatened, kinda hard to explain especially since I am not 100% why this is myself.

It also sounds like Axel is the dominant one (which has nothing to do with whether or not the dogs are neutered usually, neutering CAN make a dominant dog less dominant but not always). So he's trying to establish his dominance over Sam, and it sounds like Sam is trying not to be "beat into submission" too much by Axel. Sam isn't giving up his position in the new "pack order" to Axel just yet because he's still gotta get used to Axel being a part of the pack at all.

The best advice I can tell you is to keep a close eye on them, but otherwise let them work out issues themselves. Don't interfere until there's an actual chance of danger, or blood may be or is getting drawn. They need to work out their pack order among themselves. They won't stop fighting until they do, and maybe not even then, depending on how each dog is (I can't really tell you without observing them myself, so just going on guesses here.)

 

What he's doing is called "dominance humping" and it can happen whether either or both of them are neutered, male or female, etc. We fostered a dog (spayed female) who humped our unaltered male because she was trying to be the dominant one, and it's the only time he's ever humped anything/other dogs because he wanted to prove to her that he was, in fact, the dominant one (being older, bigger and the first dog in the household).

You need to establish with the puppy that the older dog is higher in the pack than he is. The older guy probably already knows that the human/s in the house are the leaders of the pack, so that shouldn't be a problem. If the puppy gets aggressive, crate him (you should have a crate for him) and leave the older dog out. That will show him that the older dog gets more say in how things go in the household. Discourage humping as much as you can - pull him off of the other dog if you have to. But if the older dog humps, just tell him "no" to discourage it if you don't have to physically intervene to stop it. Again, that will show the puppy that the other dog is better-trained and higher up in the pack than he is.
If he gets too aggressive, definitely see a trainer or something, or take him back to the shelter and tell them that he needs to be in a home by himself with no other animals.