Rat tail

Rat tail or rat's tail may refer to:
 * The tail of a rat
 * Rattail, fish of the family Macrouridae
 * Rattail (casting), a defect in metal casting
 * Rattail (haircut)
 * Rattail skate (Dipturus lanceorostratus), a fish endemic to Mozambique
 * Rat-tail splice, a type of electrical splice
 * Babiana ringens, a flowering plant of South Africa
 * Raphanus caudatus or rattail radish