Dogs of this breed are characterized by diminutive size, but brave character. Outwardly, they are unlikely to be able to cause fears in the robber, but loud barking and brave assertiveness will definitely frighten him away from further actions. American toy fox terrier does not trust strangers. He is always careful and attentive to his surroundings. Such a pet is hardy and energetic, it will become an ideal companion for a person with an active lifestyle.