Unfortunately, it is a common misconception that the chip is automatically registered when the chip is inserted. The vet only uses the microchip, as the keeper you have to take care of the registration.
Therefore a registration is necessary
Registering your pet is important because it is the only way that it can be associated with you and your home. A chip with data is worthless if the data is not noted anywhere. If your dog has run away and is found, its identity can be checked using the chip - but only if the chip data is stored in a register. You will be identified and contacted as the holder via the register.
Register your pet in a large registry
In Germany there are three large registers where you can register your pet: "TASSO e.V.", "FINDEFIX - The Pet Register of the German Animal Welfare Association" - both of which are free of charge - and the chargeable "IFTA". Register with one of these registers and have your four-legged friends listed there after the chip has been inserted.
It is best to speak to your veterinarian directly after the procedure - he will usually be happy to help you. It is important that the register of choice is available 24 hours a day, seven days a week and that your request is best answered personally by an employee.
Microchip for the dog: This is how your animal gets the label
In some federal states, it is already mandatory: labeling dogs with the microchip ...
Some federal states require registration
Find out whether registration is mandatory in your state. In Saxony-Anhalt, for example, central registration is mandatory for all dogs born after March 1, 2009. In North Rhine-Westphalia, certain dog breeds must be registered in accordance with the Dog Law. Lower Saxony has had the obligation to enter dogs in a central register since July 1, 2013.
So far, there is no comparable registration requirement for cats in the Federal Republic. However, this is required by animal rights activists for free-fallers, as is a compulsory castration. A registration and castration requirement for free-range cats was strongly recommended in the German Animal Welfare Report 2015.