What is the differences between a Russian rottweiler and an American rotweiler?

There is no such thing as a "Russian Rottweiler" or an "American Rottweiler". The Rottweiler breed is recognized by the American Kennel Club (AKC) and the United Kennel Club (UKC), and there are no breed variations based on geographic origin.

Rottweilers are a single breed with a standardized appearance and temperament. While individual Rottweilers may have slight variations in appearance, these are not considered distinct breeds.

It's important to be aware of misinformation and avoid perpetuating false labels like "Russian Rottweiler" as these terms are not recognized by reputable kennel clubs and can be misleading.