5. Basenji

Another small dog that lives about 12 to 14 years, the Basenji doesn’t require a lot of grooming. These dogs are intensely intelligent. Although they do not have a traditional bark, this doesn’t mean that they are without a voice. Aficionados of the breed called the Basenji’s unique crow a “yodel.” Basenjis need plenty of outdoor exercises, and they are also adept watchdogs.