Cancer is the leading cause of death in older dogs. Understanding palliative care options helps owners maintain quality of life and make compassionate end-of-life decisions for affected animals.
Cancer palliative care represents one of the most demanding aspects of companion animal welfare, requiring sustained owner commitment through a deteriorating trajectory. The welfare goal is to maintain a quality of life that the dog experiences as positive — engagement with family, appetite, absence of uncontrolled pain — for as long as this is achievable. Pain management is central; undertreated cancer pain is a significant welfare failure that is avoidable with appropriate multimodal analgesia. The quality of life threshold for euthanasia — when more days are bad than good, when the dog no longer engages with what previously gave pleasure — is a welfare determination that benefits from structured assessment frameworks and advance discussion with the veterinarian. Euthanasia before the terminal stage often provides a more dignified death than waiting for crisis.