Welcome to Paw-Talk... Jade gave the best advice there is.

Just keep your eye on the incision and make sure nothing is oozy or gooey coming from it. And if you think your pooch is likely to lick (which can lead to infection) make sure to get an e-collar. He'll probably hate the thing, but it'll be best for him.
You can also distract him with a kong stuffed with peanut butter and treats, bones stuffed with cheese, some new toys of his favorite kind... He'll be better before you know it, but be careful with him for around a week to ten days. Thats what I was told, and we just had my dog neutered a few days ago.
