8 Best Guard Dogs

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Written by Heather Hall

Updated: June 24, 2023

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Best Guard Dogs infographic
There is a ton that can make great guard dogs, but some breeds are recognized as producing the best guard dogs.

The relationship between humans and domesticated dogs dates back at least 25,000 years, but the first definitive evidence of canines selectively bred for guard dog tasks can be found roughly 2,000 years ago in classical Greece. Cerberus — the terrifying three-headed dog that guarded the gates of the underworld was perhaps a reflection of the huge and imposing dog breeds that were used to guard livestock and the property of both the rich and the poor.

Animals Used In War

Guard dogs come in a variety of breeds, but some stand out due to their specialized traits.

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In the two millennia since, humanity’s needs have diversified — and our selective breeding of guard dogs has only become more sophisticated and specialized. There are a ton of dogs that can make great guard dogs, but some breeds are recognized as producing the best guard dogs. Whether you’re looking for a new pet or are simply curious, here are eight of the best guard dogs, with an emphasis on punctuating how diverse these breeds are.

#8: Standard Schnauzer — Alert and Stubborn Dogs That Don’t Shed

The Standard Schnauzer is affectionate, yet stubborn


The Standard Schnauzer may be German, but it was essentially bred to be the Swiss army knife of working dogs. These dogs were typically employed on farms and were bred for hunting vermin, herding sheep and cattle, and protecting their caretakers on the road. Both the miniature and Giant Schnauzer were bred from this dog, but the initial size wasn’t a mistake.

The Standard Schnauzer was close enough to a small breed to comfortably travel in carts with farmers and chase rodents into their burrows, but they also had enough bulk to intimidate potential threats to livestock. Schnauzers were bred to keep the homestead safe and healthy, and that’s produced in them both a strong sense of family and a strong sense of self. They tend to build close relationships with their caretakers, but they also tend to be stubborn. In addition to being a great guard dog perfect for families, schnauzers are also hypoallergenic.

#7: Irish Terrier — A Capable and Adaptable Worker

The Irish Terrier is considered to be one of the oldest terrier breeds


The Irish Terrier shares a few things with the schnauzer: a hypoallergenic coat, a robust but medium-sized body, and a reputation for being a capable jack of all trades. These dogs that don’t shed much were initially bred to be companions, guard dogs, and hunters — but they’ve even been used as courier dogs delivering messages in the trenches of World War I.

These are one of the oldest terrier breeds on the planet as well as one of the most protective, and they’re sometimes known for sometimes being brash and reckless. Their fearlessness is matched with fierce loyalty to their caretakers. And while the Irish terrier’s bark should alert you to intruders before they’ve even stepped a foot through the door, you can also expect them to jump to the aid of their families immediately.

#6: Chow Chow — China’s Ancient Royal Guard

Although they are not particularly energetic, Chow Chows make excellent guard dogs


The Chow Chow may look like a cuddly teddy bear, but they tend to be reserved dogs that bond closely with one or very few people and see everyone else as a threat. It’s a fitting temperament for dogs that guarded palaces in imperial China. Combine that with the fact that they’re equal parts clever and stubborn, and you’re left with a breed that’s known for having a difficult reputation.

But if you get a Chow Chow early and manage to properly socialize and train them from a young age, they can grow to be exceptional family dogs in addition to strong guard dogs. They’re one of the most protective large breed guard dogs, but they’re also generally a low-energy breed.

#5: German Shepherd — A Quintessential Guard Dog

German Shepherds have a reputation for being extremely intelligent.


The German Shepherd was bred to be the perfect working dog — and while the verdict is still out on whether it worked, there’s little doubt that these large breed dogs rank both among the most protective and the best choices of dog breeds for families. As the name would suggest, they were originally bred to be shepherds and have understandably developed a strong skill for listening and following directions. A sharp sense of intelligence along with a reliable sense of initiative means that you can generally count on one of these dogs to make the right move in any situation. Some breeds on this list don’t shed, but German Shepherds aren’t one of them. These dogs are known for losing hair in abundance, and that’s doubly true during shedding season. Some would say that’s a small price to pay for a dog that will never back down when its family is in danger.

#4: Doberman Pinscher — Surprisingly Fast Large Breed Guard

The Doberman Pinscher is capable of acting with a speed that belies its size.


The Doberman Pinscher is often treated in popular culture as a villainous and efficient guard dog, but that perspective is only half true. Dobermans are highly sociable and people-oriented dogs, but they’re also the last choice you want if you’re searching for a low-energy dog. Their natural athleticism allows them to overpower intruders at a pace few other dogs can reach and can achieve a max speed of 32 miles per hour. But Dobermans excel the best when they have discipline. They share the sharp and attentive minds of their German shepherd kin and can become temperamental and anxious if they aren’t given a decent amount of both physical and mental stimulation.

#3: Cane Corso

A case of deceiving appearances, Cane Corsos are rather affectionate


Cane Corsos have been vigilantly protecting their human companions since the days of ancient Rome, but dwindling interest in this breed forced intervention to save them in the 1970s. This resurgence has brought them back from the brink of extinction after targeted efforts to revive them. A large breed with a tremendously stocky build, the Cane Corso can typically intimidate human threats without even having to move a muscle or make a noise. These dogs are bodyguards through and through — and while they’re generally calm and low energy, they do need proper socialization and training thanks to their enormous size. But beneath all of that intimidating muscle is a dog that adores its human family and showers them with gentle affection.

#2: Jack Russell Terrier — Small Breed, Big Bravado

In spite of its small size the Jack Russel Terrier has a reputation for fearlessness


If you think a small breed can’t be an effective guard dog, meet the 15 pounds Jack Russell Terrier. This breed is built as a hunting dog and ratter, but it turns out that vigorous hunting instinct also makes them an exceptional choice for guard dog duties. These dogs have especially sharp senses that are almost always tuned in, and they vocalize almost any discovery they make. But their highly territorial nature can sometimes make them too vigilant. Often confrontational with both other dogs and friendly strangers, the typical Jack Russell often needs to be kept on a short leash. But they’re fearless in the face of significant danger and unrelenting in their desire to protect the people they love.

#1: Bullmastiff — The Strong and Silent Type

In spite of an intimidating appearance the Bullmastiff is a rather affectionate pet


The result of breeding between the English Mastiff and the Old English Bulldog, the average Bullmastiff is an imposing canine that can reach a shoulder height of nearly two feet and easily weigh over a hundred pounds. Originally bred to protect the game animals on large properties from poachers, they’re built to protect extensive stretches of land — but their physicality and skills translate well to the modern-day home as well. But the most useful trait of the bullmastiff may be that they’ve been bred through generations to rarely bite or bark. Instead, they use their exceptional strength and surprising speed to pin down and immobilize intruders until they can be dealt with. And while they’re diligent guards, these dogs are loving with their caretakers off the job and are one of the best guard dogs for families.

Summary Of The 8 Best Guard Dogs

2Jack Russell Terrier
3Cane Corso
4Doberman Pinscher
5German Shephard
6Chow Chow
7Irish Terrier
8Standard Schnauzer

Other Animals That Can Be Used To Guard

Many animals besides dogs have been used for centuries to guard homes, livestock, and property. These animals are known for their natural instincts to protect and defend, making them an effective deterrent against potential threats.

Here is a list of other animals that can be used to guard things:

  • Geese: Believe it or not, geese can also be used for guarding. They have excellent eyesight and hearing, and they are naturally territorial and aggressive toward strangers.
  • Llamas: Llamas are often used to guard livestock, particularly sheep and goats.
  • Donkeys: There are certain species of donkeys that are used to help protect livestock and other property.
  • Alpacas: Alpacas are similar to llamas in their guarding abilities. They are often used to protect small livestock such as chickens and ducks from predators such as foxes and raccoons.

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About the Author

Heather Hall is a writer at A-Z Animals, where her primary focus is on plants and animals. Heather has been writing and editing since 2012 and holds a Bachelor of Science in Horticulture. As a resident of the Pacific Northwest, Heather enjoys hiking, gardening, and trail running through the mountains with her dogs.

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