Behavior changes after neutering?
Has anyone had a problem with "negative" behavior changes after neutering. We have an inside dog (so no risk of becoming a daddy) who has always been very tame, calm, lazy, etc. No marking his territory/lifting his leg/etc, so we had no behavior reasons to neuter. We decided to have it done to avoid the risks of testicular cancer so that he could live a longer, healthier life. But he's had two odd changes since we had the procedure done (about a week or two ago).
#1: All of a sudden, he's "hungry mouth". Before, he'd pick at his food all day long and sometimes would barely eat one bowl total, but would sometimes have one and a half (we have been following the "serving suggestion" on the back of the bag, and offered him half the food at each of his two meals, so he was only eating 1/2 to 3/4 of what we offered him). Now all of a sudden, he eats the second we put his bowl down, and today decided to split his food into three meals instead of two because he'd act like he was starving in between his two meals.
#2: He's been urinating more. Today, he asked to go out approximately every 2 hours (except during the night) when he normally would only need to go out a few times a day.
Are these changes normal for a dog that's just been neutered? Is it just the hormonal change that is throwing him off, or is he just weird? And if it is normal, does it go away?