Cancer is the leading cause of death in dogs over 10 years. Understanding welfare-focused approaches to canine cancer care helps owners navigate treatment decisions with their dog's quality of life as the priority.
Canine cancer welfare involves navigating the intersection of treatment efficacy, side effect burden, and quality of life in a patient who cannot consent or communicate verbally. The welfare framework for cancer treatment decisions should center on the dog's daily experience: is the animal comfortable, engaged, eating, and able to enjoy the activities they value? Treatment that extends life while maintaining quality is welfare-positive; treatment that extends life at the cost of significant suffering is not. Pain management is frequently the most impactful welfare intervention — especially for bone tumors like osteosarcoma where pain relief, even without curative treatment, can restore quality of life dramatically. Palliative care as an alternative to aggressive treatment is a fully valid welfare choice. Veterinary oncology has advanced significantly — many dogs achieve meaningful remission periods with manageable side effects. The difficult conversations with veterinary oncologists should explicitly center the dog's quality of life alongside survival statistics.