DCA now hasTSA Pre-Security check is available for select frequent flyers and for military active-duy service members (contact TSA 571-227-2829). It is presently available at Terminal B, South checkpoint-for Delta Airlines.
Australian cattle dogs, also known as blue heelers, are herding dogs. The nickname blue heeler comes from the unique coat color of the breed and his habit for nipping at the heels of the livestock with which he works. The blue heeler is friendly and sociable, making him a great pet.
Duncan Smith/Photodisc/Getty Images. Bred to fearlessly herd cattle, the blue heeler needs a strong leader in its pack or it will assume the role of pack leadership. Unchecked, this tendency can develop into dominance and even aggressive behavior toward both other dogs and humans.