In contemporary pet‐keeping culture, the death of an animal is managed by the veterinary profession. The situation of euthanising the pet at the clinic is not an easy one for the owner of the animal, who has to manage the emotions involved in the death of a pet, while at the same time worrying about animal welfare in euthanasia. In this paper I explore the performances of good death in pet euthanasia. Drawing on pet owners’ experiences, I scrutinise the practice of euthanasia in the space of the veterinary clinic, emotions felt by owners about pet loss, the role of animal agency and the expertise of the veterinarian in providing the animal with an ending to its life. Theoretically, the paper draws on recent discussions about human–animal relationships as performances, as productive processes in which the relationship comes into being. The data consists of written narratives from a nationwide writing collection organised in Finland in 2014–2015. According to the analysis, the veterinary clinic as a site of pet euthanasia makes the human–pet relationship vulnerable by shifting it away from the home, the space in which the relationship is otherwise experienced and lived. Pet euthanasia nevertheless has the potential to become a relational achievement between the agency and bodies of the owner, the veterinarian and the pet. As such, it is a situated practice in which the animal can be killed at the same time that its relationship with humans is celebrated – an act of responsible killing and of care, with a possibility to provide the animal a good ending to its life.