Gallop

The fastest gait of a horse. A two-beat stride during which all four legs are off the ground simultaneously.

Gaskin

Also known as the "second thigh," the large muscle on the hind leg, just above the hock, below the stifle.

Gelding

A castrated male horse.

God Dog

How the Apaches referred to horses.

Gray

Gray is a coat color of horses, consisting of black skin, a white to dark gray coat, and a mane the same color or darker than the body coat.

Green

An inexperienced horse.

Groundwork

Any training that is done from the ground.

Grullo or Grulla

Grulla is an intense color. The body color is described as mouse, blue dove, or slate colored with dark sepia to black points. Grullas have no white hairs mixed in the body hairs.

Gymkhana

A competition where riders and horses display a range of skills and aptitudes.