Bull Terrier

Bull Terrier is a muscular breed of dog that some people developed as a fighting dog in the 19th century. This hound breed likes to be in the company of its owner and could become destructive when bored or left alone.

Without proper socialization in childhood, this breed can be highly aggressive towards strangers, children, or other animals, especially dogs. This is why species like this should not be an option for first-time handlers or households with other pets and little children. Some countries have banned this canine due to its history of aggression.