[Clyde_Dexter]

I think you need to consider some one on one training with Nuggles.

1. Try taking him on a walk alone and work on his reaction towards other dogs. If he sees another dog and he starts growling immediately get his attention and tell him "No" (or whatever he knows that means no to him) and pick up the pace. If he won't stop turn him around and walk in the other direction, and walk fast enough where he doesn't have time to turn around and bark/growl at the other dog. Turn his attention from the other dog and reward him when he focuses on you. Eventually it just teach him to not have such a reaction when seeing another dog because when you turn his attention away from the other dog you're stopping the reaction.

2. It sounds like you should keep Nuggles away from your other dog during training, at least until he learns some impulse control. He could be jealous of your female or it might just be some bad puppy traits he picked up from earlier in life. Maybe you should consider taking him to a "dog reactivity" workshop.

If you work on commands like "No", "wait", "be patient", "Look at me" or "Focus" ... and other such words so that he can work on some control.

It sounds like these are problems that could be overcome with some consistent training. Just remember to remain patient! I know there are some other members that will have some great advice, but I just thought I'd tell you what I did with Clyde.