If you ever drive through Northern France, you'll see a lot of butchers that sell horse meat. You'll also see a lot of glue factories. The two are very definitely linked — but why is it that horses make good glue?
Scientists believe that this is the animal from which everything else evolved. The first multicellular being that spawned every living being in this world through billions of mutations, from fish to amphibians to reptiles to birds to mammals to you.