I have a 3 month old lab/golden retreiver male mix and want to get him fixed eventually. I have heard dog owners say that you should get him fixed before the age of 5 months that way he will still sqwat when he urinates not learn to lift his leg. They say he will be alot easier to keep clean and will not pee on trees and things if he remains sqwatting when urinating. Is this correct? please advise, because it would be nice if he would always sqwat.