[Cold Heat]

We decided to neuter him in the slight hope that his aggression would modify.

Might just as well shoot him.

You now have a couch ornament that stinks and still bites.

Aggressive behavior in dogs can be controlled in only one way, and that is by a more aggressive master.

A dog will be passive to only that person who dominates him. If he hold the dominant position in the family relationship, he will continue and if he cannot be dominated he must be destroyed before he hurts someone or worse.

If you cannot control him, put him down. Don't try to give this problem to someone else unless they fully understand what they are getting into and are willing to do what is necessary.(this happens all too often and results in broken friendships,as past experiences have taught me)

[HairOfTheDog]

We decided to neuter him in the slight hope that his aggression would modify.

Might just as well shoot him. You now have a couch ornament that stinks and still bites.

Come on now... Neutering him was a good move, along with some strong training that you and many of us have suggested.