Most dangerous dog breeds

Domesticated animals can be dangerous. Dogs are among the most popular pets in America. They can attack at any time.

According to the Centers for Disease Control, there were 279 deaths as a result of attacks by dogs (between 1979 and 1994).

The University of Pennsylvania's Center for the Interaction of Animals in Society sought to identify which dog breeds were more dangerous than others.

Researchers conducted the study based on a series of criteria including:
-Owner aggression
-Stranger aggression
-Aggression toward other dogs
-Rivalry with other dogs

According to the study's scoring, researchers concluded the following breeds were the 15 most dangerous:

-Chow Chow
-Akita
-Giant Schnauzer
-Papillon
-Dachshund
-Jack Russell Terrier
-Llasa Apso
-Bull Mastiff
-Miniature Pinscher
-Chihuahua
-Old English Sheepdog
-German Shepherd
-Rottweiler
-Dalmatian
-Pitbull

A note from the researchers: It is important to note that mixed breeds were not identified in the study.

Researchers go on to note that, "While it is true that some breeds may be more protective or even aggressive, not all dogs in all breeds will have the same personality or aggressive tendencies. It may instead be more helpful to look at which situations require extra caution. Indeed, dogs in the following situations are likely to be dangerous."

These are dogs that are:

-Abused
-Chained
-Neglected
-Abandoned
-Bored
-Angry
-Poorly bred
-Threatened or afraid
-Untrained
-Shy
-Insecure
-Hurt
-Ill
-Poorly socialized
-New mothers with puppies

Researchers also note dogs in high-risk situations tend to be more dangerous. But, like humans, every dog has a personality and should be treated as an individual. They say "if treated with care and respect, almost any dog can be a loving and faithful friend."

So exactly how dangerous can a dog be?

It all comes down to the strength of the dog's bite. INTERACTIVE: The danger of the bite

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