Detailed description
In Hamburg, you must keep your dog on a leash at all times.
You can apply for an exemption from the leash requirement if you have passed the prescribed obedience test with your dog under the supervision of a recognized expert, or have passed an equivalent test.
Exceptions for old and sick dogs are possible, provided you can submit a corresponding certificate containing a veterinary assessment of your dog's behavior. Please note that the submitted certificate will be checked for plausibility by the official veterinary service.
Dogs classified as dangerous under the dog law cannot be exempted from the leash requirement.