There may be circumstances where a client requests  that a dog be PTS but in the clinical/professional judgement of the veterinary surgeon destruction of the animal is not necessary   for instance where there are no health or welfare reasons for the animal to be euthanised. In these circumstances, veterinary surgeons should scan the dog  for a microchip and check the relevant database if a microchip is found before carrying out the request for euthanasia. Further, veterinary surgeons should note that where the dog in question has been rehomed from a rescue, clients may have a contract such that the dog be returned to that recue  and so it would be appropriate to discuss this with the client prior to euthanasia. Alternatively, it should be discussed whether there may be another individual/rescue willing to take responsibility for the dog, while acknowledging that making these arrangements in an emergency can be challenging