Which dog has the most aggression?
Which dog has the most aggression? Rough Collies are the most aggressive dog breed, a new study of more than 9,000 pets has found. Research conducted by the University of Helsinki found that smaller dogs are more likely to behave aggressively, growl, snap, and bark compared to mid-sized and large dogs. Which dog breed most likely to bite? Dog Breeds Most Likely to BitePitbull. Pit bulls are, quite possibly, the most aggressive breed of dog out there. Rottweiler. Whether someone gets a dog for free or buys them, it is essential to focus on the facts. Cocker Spaniel. Tosa Inu....