The German Shepherd is a breed of medium to large-sized working dog. This dog originated in Germany. In Britain and Ireland it was once called the Alsatian. This hard working and loyal canine is the second most popular dog breed by registration worldwide. (Wikipedia)
The Chihuahua is the smallest breed of dog and is named after the the state of Chihuahua in Mexico. This is the fourth most popular breed of dog by registration worldwide. (Wikipedia)