Castrating a dog is affording them a much healthier life. It reduces the chance of testicular tumors and lessened the likelihood of prostrate problems in later life.

Of course the other benefits are to prevent undesirable sexual problems, and it will often (thought not always), prevent aggression from dog to dog.

Fear aggression is always defensive in nature. It is often displayed by intense barking and generally lunging at any other dog, regardless of sex.

This type of problem CANNOT be solved on a forum, only general advice can be given. I would ALSO strongly suggest that before you embark on any behavioural therapy, that your dog is medically checked. If you carry insurance, a vet can refer you to your nearest behaviorist, who will work with you to overcome his problem and of course, you will only be required to pay the excess on your insurance policy.

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