The practice of tail docking can be found pretty much everywhere in the United States. Primarily, this is because the American Kennel Club’s set of breed standards showcases over 60 breeds that include a docked tail.
The AKC breed standard expresses Rottweilers should have a “tail docked short, close to body, leaving one or two tail vertebrae.”
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In fact, a Rottweiler with a short tail is so common that many people assume this is how the Rottie’s born. Unless you’re a Rottie devotee, if you saw one with their natural tail, you might pause in confusion.
Rottweiler tail docking is still expected throughout AKC show rings in the US while most other developed countries have banned tail docking. The Rottweiler's birthplace, Germany, only allows Rottweilers with natural tails too.
Rottie origin
Rottweiler tails were docked for several reasons throughout history and it started with protection from rabies and demons but graduated on to practical reasons like avoiding tail injuries.