The 20 Most Dangerous Dog Breeds. Labrador. The Labrador is generally a friendly, easy going, and lovable dog. Cocker Spaniel. It is very surprising, but this dog actually belongs on this list. Tosa Inu. This is a very dangerous breed of dog as it is known to be a fighting dog. Malamute. The Saint Bernard. The American.
. more dangerous than others. I have compiled a list of top 10 most dangerous dog breeds.. The dog is unpredictable at times. Checkout the list of 10 Extinct .