Facebook post by University of Helsinki

When a dog behaves aggressively towards humans, the root cause is often fear. Researchers also identified significant differences between breeds.
Dogs’ aggressive behaviour towards humans is often caused by fear | University of Helsinki l.facebook.com

Dogs’ fearfulness had a strong link to aggressive behaviour, with fearful dogs many times more likely to behave aggressively appears in the study conducted by the canine research group at the University of Helsinki.