The Scariest-Looking Dogs in the World

Voting Rules
Vote up the most terrifying breeds of dogs you hope to never encounter in the wild.

Dogs are man's best friend, but even a cute and cuddly little puppy can grow up to be a deadly killing machine! While many people own dogs, there are a large number of people afraid of dogs. This fear goes back thousands of years and likely extends to human interactions with the wolf. We know instinctively that dogs can be dangerous, but we love the little furballs anyway. 

That doesn't mean there aren't breeds of dogs that aren't dangerous to humans. There are quite a few kinds of dogs many people consider to be scary and dangerous due to their aggressive nature. We aren't suggesting all dogs of the breeds listed here are dangerous, but due to documented cases, some individuals within a breed have proven to be dangerous to humans. 

These scariest types of dogs are why many people are afraid of them and in some cases, they should be. Approaching an unfamiliar dog of any breed can be dangerous, as plenty of dogs can attack humans. While most do so only when threatened, some will attack completely unprovoked and, when a powerful dog bites into your neck, it's likely you won't be getting up anytime soon.

Photo: Petlands

  • Perro de Presa Canario
    Photo: localpups / flickr / CC-BY 2.0
    1,293 VOTES

    Perro de Presa Canario

    Size: 70 to 160 lbs.

    Origin: The Perro de Presa Canario, often called a Canary Mastiff, was first introduced by anthropologist Dr. Carl Semencic. They were first bred in Spain's Canary Islands.

    Distinguishing Features: While they have large floppy ears, many owners crop the ears so they stick up. This gives them a distinctive look, which may not be natural, but is common for the species.

    Why You Should Be Scared: Males have been known to grow to very large proportions and while they are normally friendly, they can be quite dangerous if they become violent. This typically only occurs when the dog feels threatened, or more importantly, if they perceive other dogs or strangers to be threatening to their pack/family. Their large size makes them dangerous given their tremendous strength making a bite a dangerous prospect.

    • Type Of: Dog
    1,293 votes
  • Wolf Hybrid
    Photo: user uploaded image
    1,097 VOTES

    Wolf Hybrid

    Size: Typically, they are medium to large dogs

    Origin: A Wolf hybrid is any hybridization of a domestic dog and any of five species of wolf. There are a wide variety of types originating from the many combinations of wolves and dogs and they can occur naturally or through a breeding program.

    Distinguishing Features: This depends entirely on what dogs and wolves go into the coupling, but they tend to have long fur with white, grey, and black colors.

    Why You Should Be Scared: While all modern dogs originated from wolves, the wolf is not a domesticated animal. Its nature makes them dangerous to humans and this has been shown to remain true even when only half of a dog comes from the DNA of a wolf. They can become aggressive and highly territorial, which makes them relatively dangerous when compared to dogs without any wolf blood in their systems.

    1,097 votes
  • Rottweiler
    Photo: user uploaded image
    1,259 VOTES

    Size: 77 to 132 lbs.

    Origin: Rottweilers were bred by the Roman Empire.

    Distinguishing Features: They have black bodies with light brown highlights, usually found on the belly and around the muzzle. Many have light brown eyebrows.

    Why You Should Be Scared: Rottweilers are often found near the top of the list of deadly dogs. While most are calm with a nice temperament, these dogs have been trained to be highly aggressive watch dogs. Their herding nature makes them incredibly defensive of their territory and the territory of their pack/family. For a trained individual who is protecting someone or something, they can be quite deadly given their overall strength and bite. They make great pets, but you probably need to lock them up when you have unfamiliar people over for afternoon tea.

    • Type Of: Dog
    • Examples: Sampson
    1,259 votes
  • Chow Chow
    Photo: CAPow! / flickr / CC-BY-NC-ND 2.0
    1,086 VOTES

    Size: 45 to 70 lbs.

    Origin: Chow Chows are some of the oldest breed of dog having originated in Northern China during the Tang Empire.

    Distinguishing Features: Their most distinctive features are their curved tails, which extend above and back onto their backs and the black spots and coloring of their tongues.

    Why You Should Be Scared: Chow Chows are typically friendly dogs, but they can sometimes snap at people for little to no reason. When they do, their bites are not often too damaging and are done in a more defensive manner, but their propensity to bite ranks them as some of the most common dogs to attack humans.

    • Type Of: Dog
    1,086 votes
  • Dobermann Pinschers
    Photo: Maja Dumat / Flickr

    Size: 71 to 88 lbs.

    Origin: Dobermann pinschers were developed in 1890 by Karl Friedrich Louis Dobermann, a German tax collector.

    Distinguishing Features: Most examples are black with light brown fur around the feet, but some are a lighter brown in color. They are highly intelligent dogs capable of being trained for a variety of uses.

    Why You Should Be Scared: Under normal circumstances, Dobermann pinschers are gentle dogs with a lovely disposition. They can be easily trained to work as guard dogs and thanks to their incredible loyalty, they can become dangerously aggressive should the need arise. Their attacks can be fatal due to their overall strength, making them a particularly frightening dog.

    • Type Of: Dog
    • Examples: Shadow
    1,036 votes
  • Pit Bull
    Photo: user uploaded image
    1,263 VOTES

    Size: 30 to 60 lbs.

    Origin: Pit bulls originated in the British Isles.

    Distinguishing Features: Pit bulls have a wide mouth, which make them look like they are smiling. They are often brown in color with white markings, but this can range wildly due to selective breeding.

    Why You Should Be Scared: Generally, pit bulls are sweet dogs who make for great pets, but they can have a violent tendency, which may manifest out of nowhere with little to no warning. When they bite, they tend to latch on, which can lead to severe injury and death. Due to their aggressive nature, they have been used in dog-fighting rings all over the world and have a nasty reputation. Several airlines and numerous countries forbid them from traveling on planes or moving to their nations. They are considered to be at the top of the list when it comes to dog attacks.

    • Rank: Breed
    • Type Of: Dog
    • Examples: Butterfly
    1,263 votes