Hi Humans,

Today’s guest writer is Stacy Mantle, Founder of PetsWeekly. Stacy is sharing information on whether some dog breeds are more aggressive than others.

There are many opinions on which breeds of dogs are the most dangerous. Ask someone on the street, and they are likely to suggest one of the larger breeds like pit bulls, german shepherds, rottweilers or dobermans are the most aggressive.

These same people would be surprised by what the data shows. In Temperament Tests, dogs are walked through a real or simulated neighborhood where they are exposed to a variety of unknown situations (e.g., another dog, a person, a car, etc). Dogs fail this test when they exhibit any of the following signs:

  • Strong avoidance
  • Panic, without recovery
  • Unprovoked aggression

According to tests conducted on thousands of dogs by the American Temperament Test Society, these are the top 10 most aggressive breeds:

  1. Dachshund – 32% of these dogs failed the test
  2. Chihuahua – 31% of chihuahuas failed the test
  3. Chow Chow – 29% of these dogs failed the test
  4. Doberman Pinscher – 21% failed the test
  5. Dalmatian – 19% failed
  6. Rottweiler – 16% failed
  7. Jack Russell Terrier – 15% failed
  8. German Shepherd – 14.8% failed
  9. Siberian Husky – only 13% failed
  10. American Staffordshire/Pit bull Terrier – a mere 12.5% failed

Does that surprise you? It might. But, remember that aggression and temperament is measured by several factors.

While chihuahuas scored the lowest on temperament test, their tiny mouths rarely leave much damage. The opposite of the tiny chihuahua is the large Chow Chow or Rottweiler – these dogs have large mouths and are capable of seriously injuring an adult. On the good side, these larger breeds are much less likely to bite.

Read more about the Temperament Test and these findings at the American Temperament Test Society, Inc.