Growing up we always had neutered males. Always. I'm planning on keeping new puppy intact, unless for health reason. I'm already getting grief from my mom who has worked at a vet clinic since the dawn of time. "All he'll think about is finding a female" "He'll never be a good dog. His mind will always be somewhere else" "He'll mark on everything" "He'll be more aggressive" I'm sure you've heard them all. How are intact males different than a neutered male? I really have no idea what to expect.