"I would first ensure that the results are accurate. I would want to have concrete evidence for the owner of the dog. My approach from there would be to have my discussion with the owner prepared ahead of time, along with options for the next steps. If the owner was in my office at the time, I would bring them to an area where we could be alone, and they would have a safe place to grieve. I would explain my diagnosis and the fact that the illness is terminal. If the prognosis left some time for the pet with the family, I would give them options to have some final days with the dog and set a plan for euthanization. If the tests came back after the owner and pet had left, or if the dog remained in the clinic, I would immediately call the owner. If I got a voicemail, I wouldn't leave any diagnosis on the voicemail and just ask them to call at their earliest convenience. I've had the experience of working in a vet clinic during high school and have gotten to experience grieving families when putting a pet down. Being a shoulder to lean on and an ear to listen to is vital in this situation and something I would always provide as a student with your program."