Your favorite color.
Why is the Homo Sapiens built up of molecules like deoxyribonucleic acid and hemoglobin, which contain oxygen and carbon, which are commonly used in organic chemistry, while the Canis Lupis has very sharp teeth, made of a tough enamel of carbon, oxygen, and other elements that have at least 1 electron orbiting a nucleus of protons and neutrons, which contain quarks which are an important part of the space-time continuum?