savage
When a horse bites another horse or a person.
second dam
Grandmother of a horse. Also known as a “granddam.”
socks
Solid white markings extending from the top of the hoof to the ankles.
sophomores
Three-year-old horses. Called sophomores because age three is the second year of racing eligibility.
stall walker
Horse that moves about its stall constantly and frets rather than rests.
stallion
A male horse used for breeding.
stallion season
The right to breed one mare to a particular stallion during one breeding season.
stallion share
A lifetime breeding right to a stallion; one mare per season per share.
state-bred
A horse bred in a particular state and thus eligible to compete in races restricted to state-breds.
stockings
Solid white markings extending from the top of the hoof to the knee or hock.
stripe
A white marking running down a horse’s face, starting under an imaginary line connecting the tops of the eyes.
stud
1) Male horse used for breeding. 2) A breeding farm.
stud book
Registry and genealogical record of Thoroughbreds, maintained by the Jockey Club of the country in question. Use lower case when describing a generic stud book, all words, including “The,” are capitalized when describing “The American Stud Book.”
suckling
A foal in its first year of life, while it is still nursing.
swipe
A groom.
