Marking is the one of a few behavior that is effected by nuetering wandering is the other. The influece nueter has on marking behavior has no effect on when the nueter is done,. Nueter early does result in less marking behavior than nuetering later. Most males can be taught not to mark. but if it becomes and issue you can nueter later without it effecting result/ approximately 65% of marking behavior is resolved by nuetering, Intact males are less agressive than Nueter males. the only agression related to sex hormones is Male Males agression related to opportunity to mate,. So unless you have multiple intact males in the same househoild with intact females this is not an issue. There are countries in Europe l/ike Norway that forbid spay and nueter unless related to a current health is./ ie pyoderma in females, testicular cancer and males and what you worry about is not an issue.
The biggest issue with not Nuetering male dogs in USA is the backwards thinking of mosty Dog kennels and Day cars that won't accept intact dogs.
http://www.naiaonline.org/uploads/WhitePapers/SNBehaviorFarhoodyZink.pdf
"Behavioral characteristics of intact male and female dogs were compared with those of four groups of neutered dogs: those neutered at or before 6 months, between 7 and 12 months, between 13 and 18 months, and after 18 months. Our data showed that the behavior of neutered dogs was significantly different from that of intact dogs in ways that contradict the prevailing view. Among the findings, neutered dogs were more aggressive, fearful, excitable, and less trainable than intact dogs. "
look at it this way would you rather live you life with another adult or a Perpetual teenager, can't thing of many that opt for the emotional less stable teanager for a long term relationship.,
Aggression toward Familiar People, Strangers, and Conspecifics in Gonadectomized and Intact Dogs
"Aggressive behavior was defined (a) using mean scores for all questions on the C-BARQ for aggressive behavior (range 0–4) and (b) comparing dogs with no aggressive behavior (all questions answered 0) to dogs with moderate or severe aggression (at least one score of 2, 3, or 4). Data for intact dogs were compared with those for dogs gonadectomized at 6 months or less, 7–12 months, 11–18 months, and >18 months. Neither gonadectomy nor age at gonadectomy showed an association with aggression toward familiar people or dogs. However, there was a low but significant increase in the odds of moderate or severe aggression toward strangers for all gonadectomized dogs compared with intact dogs, but this effect was driven entirely by data for dogs gonadectomized at 7–12 months of age, which were 26% more likely to demonstrate aggression toward strangers. This large, comprehensive study of the relationships between gonadectomy and aggressive behavior in dogs demonstrates that when the many factors affecting aggressive behavior are considered, there is no evidence that gonadectomy at any age alters aggressive behavior toward familiar people or dogs, and there is only a minimal increase in aggression toward strangers. "
https://www.researchgate.net/public...ideo_Analyses_Questionnaires_and_Case_Studies
The non-castrated males show more
behaviour indicating high status. The results of the questionnaires indicate a trend that neutered
males react emotionally more unstable in stressful situations and the case studies show a
tendency for aggressive behaviour and fear to be more frequent in castrated dogs.
Conclusion: Our results support the assumption that castration may have a negative influence
on the behaviour of male dogs. Neutered dogs may gain attractiveness for intact dogs which
can lead to a high stress factor for the castrates. Accordingly, dog owners should be aware of
the consequences for the dog.
Hormone-sparing sterilization methods for dogs, like hysterectomy for females and vasectomy for males, are ways to sterilize pets without the negative impacts from hormone loss.
www.parsemus.org