Advances in diagnostics and treatments such as those we use at the London Veterinary Clinic are there to extend the lives of our pets. All of us here have our own pets. We feel that ‘quality of life’ is almost always far more important than ‘quantity of life’. The moral dilemma this brings is how far should we go, using the modern technological advances of medicine, to prolong the lives of our pets? They have no say in the decisions we’re making about their treatments. Is it fair for a pet to have continuing treatment when a cure is not possible? Can we be sure that what we think of as a ‘treatment’ is not equivalent to a ‘medical assault’? How do we make safe decisions?