Sighthound

A dog bred to spot and chase prey across open ground, relying chiefly on keen vision and speed rather than scent.

Coursing: A form of hunting in which dogs pursue visible game across open terrain. It describes the open-ground chase for which sighthounds were bred.
Dog: A domesticated mammal descended from ancient wolf populations and selectively bred into many forms. Sighthounds are a group of specialized domestic dogs.
Greyhound racing: A sport in which greyhounds race around a track, typically chasing a moving lure. It turns the greyhound's speed and pursuit response into a timed competition.
Bloodhound: A large scent hound renowned for tracking human and animal scent over long distances. Its scent-led tracking provides a clear contrast to pursuit by sight.
Canine vision: The visual capacities and limitations of dogs, including motion detection, color perception, and low-light sensitivity. Visual tracking lets sighthounds detect and follow moving prey at a distance.
Dog breed: A population of domestic dogs maintained for recognizable inherited traits and ancestry. Sighthounds include breeds shaped for a shared kind of pursuit.
Greyhound: A tall, slender sighthound breed known for exceptional speed and a double-suspension gallop. The greyhound is a prominent breed used in racing and coursing.
Beagle: A small scent hound bred to follow game trails, especially those of hare and rabbit. Beagles typically follow ground scent rather than chase prey by visual tracking.
Fast-twitch muscle: Muscle tissue that contracts rapidly and powerfully but fatigues sooner than slow-twitch muscle. Rapid contractions help sighthounds accelerate during a chase.
Selective breeding: The deliberate reproduction of organisms with traits humans want to preserve or strengthen. Repeated selection established the speed, build, and behavior associated with sighthounds.

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