A putto is often called a cherub (plural cherubs) although unlike the Biblical cherub (plural cherubim) in form and symbolism: cherubim have four faces of different species and several pairs of wings, and are sacred, whereas putti are secular and represent a non-religious passion.
(The term stallion for an uncastrated male horse dates from this time; stallion = stalled one.) Stallion is also used to refer to males of other equids, including zebras and donkeys.
Stallions sometimes exhibit the Flehmen response by smelling the urine of a mare in heat. A stallion sometimes scent marks his urination spots to make his position as herd stallion clear. A male horse's penis is protected by a sheath when it is not in use for urination.