I have heard it does, My boy will be 5 months next week and will be getting neutered, he lives with another male dog(Who is already altered), I was wondering if some of his peeing can be related to making, being he will go out pee and come in and pee(I am pretty sure its not a infection because its not little trinkets of urine but full blown puddles). He is a good boy, he does have dominance issues which we are working on and I know that once they are neutered they tend to mellow out with that.

Neutering often helps cut down on marking, not accidents. An accident is not intentional an therefore will not be affected by neutering. With that said, it is no guarantee that marking will stop or be reduced by neutering, but it is likely to help.

Non the less he gets neutered on the 26th, I think its just him being a puppy, he does not lift his leg and releases his entire bladder.