A good rabbit owner will notice changes in their pet’s behaviour that signal illness, pain or discomfort and will immediately consult a rabbit friendly vet. As prey animals, rabbits will instinctively hide signs of pain as long as they can so when it becomes obvious then they are in a very bad way. If the vet advises that the condition is untreatable and the expected quality of life is poor, then the kindest course of action is euthanasia.