Aggressive Dog Behavior

Aggression is one of the main reasons that dogs are euthanised or rehomed; at least 30% of all dogs in rescue centres are there because of the incidence of aggressive behaviour in one form or another. It is actually unusual to have a dog that is aggressing to have just one type of aggression; most dogs have more than one of the following types of behaviour.
It would be prudent, before embarking on a program of aggressive behaviour modification, to rule out any medical reasons for that behaviour, especially if there is a sudden change in the dog’s temperament.
Their are some fifty-odd different medical reasons why a dog may be showing aggressive tendencies, these range from Pain to Thyroid Dysfunction, Epilepsy to Hypoglycaemia and Diabetes.The following is a list of the more common aggressions and why they may be occurring. This is only a part of the total types. Because of the constraints of space it can only be a fleeting reference.
This problem can often be diagnosed if someone who is confident around dogs (that the dog does not know well) takes it out on the lead. It will not get the same fearful vibes from the owner, therefore the reaction to another dogs approaching will be less intense. It is a good way of finding out if your dog suffers fear aggression, as the behaviour will either not be exhibited or will be less pronounced. The owner can then use a desensitisation program for both the dog and themselves.
