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.
1. Border Collie: A workaholic, this breed is the world's premier sheep herder, prized for its intelligence, extraordinary instinct, and working ability.
1. German shepherd. This breed is Hack's first choice in terms of family guard dogs. She says: “For protection, security, and a family dog, I would say a German shepherd is probably the best choice.”
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.
1 The German shepherd dog is a herding breed known for its courage, loyalty and guarding instincts. This breed makes an excellent guard dog, police dog, military dog, guide dog for the blind and search and rescue dog. For many families, the German shepherd is also a treasured family pet.
Bullmastiff. Known for physical strength, protection instincts, courageousness and extreme family loyalty, the Bullmastiff is one of the best guard dog breeds to have. ...
Dog breeds that can be left alone for long periods include Labrador and Golden Retriever, Beagle, Peekapoo, or Shiba Inu. ... Dog breeds that can be left alone for longer periods include breeds like:
Bluey, an Australian cattle dog, entered the Guinness Book of World Records by living to the ripe old age of 29 years and 5 months, setting the record for oldest dog ever.
Australian Shepherds will act very protectively around their owners and immediate family. Outsiders may make the Aussie cautious and guarded and sometimes even aggressive depending on whether you've socialized your dog.
Pit Bulls are the most abused, abandoned, and euthanized dogs in the US. However, Pit Bull history tells us that they were once treated as loving companions.
