Nipples: Kardong 1998:213) Raised epidermal papilla that include multiple lactiferous ducts, releasing milk to the infant. They are prevalent among mammals; humans and elephants have pectoral Mammae with nipples. ["Teats", sometimcs erroneously said to be found in elephants, include a cistern and a single lactifetous duct; they are found in derived artiodactyls, such as deer, sheep, cows.]