It depends on the dog. Most our males have been intact forever. Bernard is 4 and intact right now. He's so easy it's ridiculous.
Trey was neutered at 2. He was weird before and weird afterwards. He wasn't even a pain when he was intact and Nikki was in heat.
Beau was the one dog that neutering was really helpful. He was very high strung, constantly trying to mount other dogs. Constantly wanting to mark even indoors. Neutering helped a lot. Of course then it made him balloon up in size and his coat got awful from being neutered. But now that he's skinny again, he seems the same, just much much less humpy and his hair is horrible. lol
Trey was neutered at 2. He was weird before and weird afterwards. He wasn't even a pain when he was intact and Nikki was in heat.
Beau was the one dog that neutering was really helpful. He was very high strung, constantly trying to mount other dogs. Constantly wanting to mark even indoors. Neutering helped a lot. Of course then it made him balloon up in size and his coat got awful from being neutered. But now that he's skinny again, he seems the same, just much much less humpy and his hair is horrible. lol