According to Svartberg's data (PDF), a pinscher, a Bernese mountain dog, or an English springer spaniel might be the most disloyal since each ranks very low on playfulness, with moderate sociability.
Afghans are the least obedient dog breed because they simply choose not to respond to your command. They are intelligent dogs who have discovered selective hearing. While highly sensitive, they are also extremely stubborn.
The Pit Bull is the most common dog breed (along with pit bull breed mixes) found in shelters in the United States. They are also the most abused, neglected, and the most euthanized.
1. American Pit Bull Terrier. The American Pit Bull Terrier is considered one of the most dangerous dog breeds – both in the U.S. and internationally. They are a very aggressive breed and have been known to attack and kill people.
Black Dog Syndrome
Most experienced shelter workers will tell you that black dogs are often adopted less than any other coat color. Be it black Labrador Retrievers, Shepherds, Rottweilers, etc., they are often passed over by potential adopters.
Despite being one of the most expensive dogs in the world, the Afghan hound has the lowest IQ of all dog breeds, per Coren's research. But since these hounds are known as independent and strong willed, perhaps they just can't be bothered to learn commands; what's in it for them, after all?
Is there such a thing as an untrainable dog? The short answer, according to animal behaviourist Dr Joanne Righetti, is no. “Most dogs are trainable. There may be some dogs with brain disorders or injuries that find it hard to learn, but this is the exception,” she explains.
1 – Basenji: The Barkless Dog
The Basenji or Africa's “Barkless Dog” is a unique breed and contender for the title of oldest AKC breed. While it's true the Basenji doesn't bark, when they express themselves they make a unique sound that is something between a chortle and a yodel.
Dachshunds, French Bulldogs and Poodles are among some of the most pickiest eaters that will fuss over what is placed in their bowl. While dogs are known for eating pretty much everything, some pups are notorious for actually being quite fussy about what they eat.
Pit Bull Terriers
Probably the most notorious breed on this list, the pit bull has a reputation for unpredictability and aggression, even against its owner or his family. State and local governments have been vigorous in restricting ownership of this dog with breed-specific legislation.
Children and dogs often form wonderful relationships. But some dogs are uncomfortable around kids and may react with fear. They may walk away, hide, or bark and lunge at children.
Shih Tzus loves children and other animals, making them one of the top lazy dog breeds for families. On the bright side, if exercised and fed the right Shih Tzu dog food, they are very healthy and live a long time. Affectionate and outgoing, this breed is great for people who travel with their pets.
The excitable, unruly, or disobedient dog would be one that after sufficient attention to training, still does not respond to commands, will not walk nicely on a leash, jumps on people, continually barks for attention, steals things or generally wreaks havoc on the household.
1. Border collie. According to The Intelligence of Dogs, which ranks 131 dog breeds in terms of their relative intelligence, the border collie is the smartest dog breed known to man.
Cats can learn tricks, recognize their names, understand basic commands, and have a longer-lasting memory than dogs.
According to the report, "Black dogs had the least likelihood of being adopted compared to the reference coat color of black and tan." And dogs of all other colors, such as red, merle, and tricolor dogs, "were preferred only slightly over black and tan."
Dogs are the most popular household pet in America. According to the American Veterinary Medical Association (AVMA), it is estimated that there are over 76 million pet dogs in the country that are cared for by 48 million households. This means each household has an average of 1.5 dogs between them.