Although they are popular family pets, cocker spaniels are consistently ranked among the most aggressive dogs. However, each dog is an individual, and aggression is a highly preventable behavior problem. While it's easier to prevent aggression than treat it, even the most aggressive dogs can usually learn gentle ways.

Why are cocker spaniels so aggressive?

Genes and Breeding Practices

The major reason why some Cocker Spaniels are aggressive is what they have inherited from their parent breeds. Many Cockers inherit aggression. Both these genes and the breeding practice have a huge impact on the dog's behavior.

Do Cocker spaniels have bad tempers?

A floppy-eared, innocent-looking breed may be one of the world's most aggressive dogs, according to a new study. The Spanish study found that English cocker spaniels tend to be more hostile than other breeds.