Shar-Pei
A defining characteristic of a Shar-Pei is its wrinkly skin, a trait that is especially pronounced in puppies until they gradually grow into the folded flesh. The folds are cute but prone to infection. The folds need to be wiped out with a damp cloth. Like the Chow Chow, Shar-Peis have a dark tongue and were likely cross-bred at some point, as both breeds go back to ancient China.
The Shar-Pei is territorial and aggressive. Like all breeds, it can be trained for proper socialization, but with the Shar-Pei, you will need a professional trainer who starts with it as a puppy. The dog’s aloof attitude, however, may make it a disappointing pet for children. Shar-Peis are not interested in hugs or cuddles, yet need to live inside. It is an intelligent but stubborn breed. This is not the dog for a novice owner.
Dogo Argentino
The Dogo Argentino is another breed banned in the UK under the 1991 Dangerous Dogs Act. It was bred in Argentina to be a big-game hunting dog for large prey like puma. It was also bred to be a protectorate for humans. But because of his predominant traits—stubborn, intelligent, and domineering—the Dogo was banned in several countries.
This dog is not recommended for first-time dog owners. Besides being intelligent and stubborn, a Dogo is large, powerful, and energetic. Without a leader who is just as strong, plus calm, firm, and consistent, a Dogo will be destructive and in charge. Even a trained Dogo will go after your neighbors’ pets, killing cats and small dogs. A high fence is a necessity with a Dogo. This dog is a natural worker, and without something to do, it will likely chew up your personal belongings.
Belgian Malinois
The Belgian Malinois is not a good breed for children. This dog was bred as a herder, and as a herder, he tends to bite or nip at kids, as if to keep them in line. The Belgian Malinois became a popular breed in the late 1800s, when it worked in Belgium either as a shepherd or a guard dog. To this day, the Belgian Malinois remains one of the nation’s most beloved dogs.
This breed is intelligent and obedient, with strong territorial instincts. The master of a Malinois is firm and even-handed. A harsh owner will find a very uncooperative dog. These dogs need vigorous exercise every day. They are high-energy dogs that can become destructive and unmanageable if not properly socialized and trained.
Doberman Pinscher
These highly energetic dogs are big and strong and make outstanding guard dogs. But a Doberman Pinscher is not for anybody. It needs extensive training by a handler who is more dominant than the dog. Without the correct attention, a Doberman will become bored, destructive, and vociferous.
The breed was developed by a German tax collector who needed a powerful and dependable guard for the tax monies collected. It was first recognized at an Erfurt dog show in 1897. Dobermans are tall, shorthaired, and full of strength and stamina. They are loyal, tolerant, and dedicated to family. Though the breed is easy to train, few can deliver the consistent, confident, rule-setting guidance it requires. A Doberman can become willful and stubborn if left to its own terms.
Australian Shepherd
Contrary to its name, the Australian Shepherd originated in North America and was bred as a herding dog in the Western states around the time of the Gold Rush. This is a very active dog that needs a couple of hours of exercise each day. It has very high stamina levels allowing it to work as a herder all day long.
It's also bold, confident, alert, smart, responsive, as a herding breed. If these traits are not released with daily exercise, however, these dogs can make life difficult for its humans. Another trait that is unfavorable to a family setting is its propensity to try to herd children and pets. It will nip and use other herding tactics.