Top 10 World Most Aggressive Dogs

10. Cocker Spaniel

This breed were originally used as gun dogs because of their strong sense of smell. Know to be useful in the tracking of birds for hunting; the Cocker Spaniels have recorded about 60 fatalities.

The English Cocker Spaniel is an active, good-natured, sporting dog, standing well up at the withers and compactly built. Outside the US, the breed is usually known simply as the Cocker Spaniel, as is the American Cocker Spaniel within the US. The word cocker is commonly held to stem from their use to hunt woodcock.