Though this breed was once a fierce gladiator, it is much gentler today. A Bull Terrier might have a preventive effect and it will certainly defend its owner in a truly critical situation. Bull terriers are known to be courageous, scrappy, fun-loving, active, clownish and fearless. The Bull Terrier is a loyal and polite dog. They become very attached to their owners. The Bull Terrier thrives on firm, consistent leadership and affection and makes a fine family pet. Bull Terriers like to be doing something and fit in well with active families where they receive a great deal of companionship and supervision. They do not do well in situations where they are left alone for 8 hours a day. This breed can be a wonderful pet if very thoroughly socialized and trained, but not recommended for most households. Fond of both grown-ups and children, but if they do not get enough physical and mental exercise they may be too energetic for small children. Children should be taught how to display leadership towards the dog. Bull Terriers must be given a lot of structure. Unaltered males may not get along with other male dogs. Males and females can live together happily and two females can also be a good combination with care and supervision. They are not recommended with other non-canine pets such as hamsters and guinea pigs. They make excellent watch dogs.