Neutering my dog: Fasting, weight gain, and will he be dull after?

Good on you for neutering Damon! It's a very responsible decision to make, and will have many health benefits for him. He will be fine without being fed for one morning. It's imperative he is not fed or surgery cannot happen. All dogs must be fasted before surgery to prevent them from potentially regurgitating their food while under anesthesia. You may just have to deal with his barking for one morning, and it will be ok. It's temporarily.

No, it's not true he will gain weight after surgery. As long as he is fed a healthy diet of dog food, doesn't get excess treats or any human food, and gets plenty of exercise, he will stay a normal weight. All my pets are spayed and neutered, and none of them have gained weight after surgery because I feed them a healthy diet and exercise them. Intact dogs can just as easily gain weight as neutered dogs if you feed them too much and don't exercise them.

Dogs who are neutered are not dull afterward. I have a Basset Hound that was a former show dog, and he was about two when I first got him. He wasn't neutered at the time, and I neutered him. He is just as lively as before. You can expect that Damon will not want to roam for females to mate with, and any aggressive behaviors that are linked to hormones are usually typically eliminated with neutering. Damon will still be the same dog you had before surgery. I hope this helps :-)