Rottweilers came to the USA in 1990.  They were developed in Germany. Rottweilers can be found anywhere in the United States.     A rottweiler stays black.They have rust and mahogany marks. The rottweilers chest is roomy. The neck has very powerful muscles. They can grow to be very big. A male can grow up to 24 to 27 inches. A female can grow up to 22 to 27 inches. The temperment is basically calm. It is a courageus dog and a self confident behavior.      It is an intelligent dog. The female and male are the same. Rottweiler and about their species.