Heads up for your neo

I have been researching on Neos because I would like to get one in the future. I have read that males can be aggressive towards other males but they are more goofballs than females. I read that they need to be socialized and trained at an early age so they are easier to deal with later on. They can also be aggressive with other males.

I want to get a male neo but my mom is apprehensive on if it will be aggressive or not. I would like to get a puppy so I can be sure to enforce a certain (good) behavior. Let me know how he does with other people and male animals!