Dogs Are Aggressive If They Are Trained Badly

Dogs Are Aggressive If They Are Trained Badly: "some of the factors that cause aggressiveness in dogs are: first-time dog ownership; failure to subject the dog to basic obedience training; spoiling or pampering the dog; not using physical punishment when it is required; buying a dog as a present, as a guard dog or on impulse; spaying female dogs; leaving the dog with a constant supply of food, or spending very little time with the dog in general and on its walks.
'Failure to observe all of these modifiable factors will encourage this type of aggressiveness and would conform to what we would colloquially call 'giving our dog a bad education'', Pérez-Guisado explains to SINC.
The study, which has recently been published in the Journal of Animal and Veterinary Advances, is based on the following fact: approximately 40% of dominance aggression in dogs is associated with a lack of authority on the part of the owners who have never performed basic obedience training with their pets or who have only carried out the bare minimum of training"