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The 9 Most Aggressive Dog Breeds

Photo of Aggressive Barking Dog

In the United States alone, aggressive dog breeds have been responsible for as many as 35 deaths in people each year. Although statistics on aggressive dog behavior towards other dogs aren't available, the number of aggressive incidents involving dogs is likely to be much higher.

Fact Check:

A study of dog bite data from 1982 to 2011 indicated that American Pit Bull Terriers, Rottweilers, crosses of these two breeds and Wolf Hybrids were responsible for most injuries and fatalities to humans.

The following is a list of the top 9 most aggressive dog breeds with respect to attacks on people, as listed in that study..

1. American Pit Bull Terrier

American Pit Bull  Standing

There are many sweet natured Pit Bulls out there, but most of them show aggressive dog behavior towards other canines.

They were bred to fight, and they still have that instinct to argue with other dogs.

This is a serious problem because their powerful jaws can cause a lot of damage. Click here to get the full scoop on Pit Bull Aggression.

2.Bull Mastiff

Aggressive Bullmastiff

This breed resulted from the careful breeding of the old style of English Bulldog and the English Mastiff, to produce a large powerful breed that was extremely loyal.

These dogs were used to guard English estates and to protect the gamekeepers who managed the grounds.

3. Rottweiler

Aggressive Charging Rottweiler

This German dog was originally used as a farm dog, herding livestock and pulling carts.

Their instinctive protective and guarding instinct made them a good choice as police dogs and guard dogs.

The Rottweiler is responsible for the second-highest number of fatalities due to dog mauling, and this coupled with their size and strength, makes it essential that they are trained and socialized, for the safety of all around them.

4. German Shepherd