@chrisf said in Growling at dogs during walk:
Though still it seems like neutering might also be a reasonable approach to managing hormones as well as reducing the instinctual behaviors which come with maturing males. Only as an adjunct to training of course.
There actually is research indicating pretty strongly that neutering may make dogs more reactive, not less.
This includes two studies, both of which used the Canine Behavioral Assessment and Research Questionnaire (usually abbreviated as the C-Barq), a widely used scoring list for dog behaviour where the dog is evaluated on the basis of more than 100 questions. Large groups of dogs were used in both researches, providing reliable figures.
In a study by Deborah Duffy (University of Pennsylvania) 3.600 dogs were included. The research by Farhoody (Hunter College in New York) even included 11.000 dogs. The results summarized: aggressive behaviour did not decrease, rather the opposite. The dogs were significantly more anxious. Only marking decreased significantly.
Duffy saw some striking differences between intact and neutered dogs. Neutered females prove to exhibit aggressive behaviour towards strangers as well as their owners more often, the differences were significant. Equally striking, the females were also much more anxious and sensitive to touching. Both females and males were found to be much more interested in food, begging has increased in both sexes.
Aggressive behaviour towards other dogs was breed specific. Some breeds including the Yorkshire Terrier, the Siberian Husky and the West Higland White Terrier had less dog-dog aggression. The Dachshund, the Springer Spaniel and Golden Retriever showed more targeted dog aggression. In average all breeds showed that dogs, male and female, had more aggression towards other dogs.<<