Hello,I have a 2 year old Male. I am wondering if I should now get him neutered. When out he always sniffs stuff and then gets really stuck on spots to the point he gets all.drooling and his mouth starts to chatter. We don't interact with a lot of other dogs, but tonight while.i was playing frisbee in the park he spotted a dog or smelt before I noticed and he ran over and instantly went to humping.He loves to try and pee on every single tree or post on walks - never in our house.Please share some thoughts based on his behaviors.