Cancer is the leading cause of death in dogs over 10 years old. Managing quality of life during cancer treatment requires understanding when treatment supports welfare and when it compromises it.
Cancer treatment decisions for dogs require a welfare-centred framework that prioritises quality of life over length of life. Unlike human oncology where extending life is often the primary goal, veterinary oncology's gold standard is maintaining quality of life. Dogs on chemotherapy generally tolerate treatment well, with most experiencing mild or no side effects - the 'cancer patient suffering through chemo' image from human medicine often does not apply. But treatment decisions must always ask: 'Is my dog experiencing good days that justify the treatment, or am I extending suffering?' Validated quality of life tools, honest veterinary communication and regular reassessment allow owners to make decisions genuinely centred on their dog's experience.