Aggressive Small Dogs
When a person is scared of dogs in general, the fear is generally most pronounced around larger dogs. The fear may be due to a bad experience in childhood or because of a fear of the overall size of the dog and the dog’s teeth and mouth. While there are some aggressive larger breeds, toy dogs need to be watched just as carefully as the large ones.
There is a common belief among individuals that work with toy breeds or the smaller dogs that these are the most difficult dogs to handle in any situation. The smaller dogs, including Chihuahua, Dachshunds, a variety of terriers, and others, all are capable of becoming scared and acting out because of this.
Another factor in aggressive toy breeds is that many of them are smaller versions of dogs that were bred to be guard dogs. For example, standard poodles were not only bred to be smart and hunting dogs but they were also designed to protect their “master” and their property. Because the smaller poodles are from the same genetic stock with all of the same character traits as the larger dogs, they too can be aggressive towards their family and protective of what they deem to be their property.
A final problem with toy breeds is that they are frequently treated more as children or babies than as dogs. This means that they may be rarely disciplined for bad behavior. There seems to be a mentality that one doesn’t need to discipline a toy dog since it stays puppy sized forever. Unfortunately, this begets poor behavior and aggression problems.