The Whippet and Greyhound are both sighthound breeds known for their slender and athletic builds, designed for high-speed chasing. While they share similar physical characteristics, such as long legs and a deep chest, there are distinctions in size and temperament. Whippets are generally smaller and more adaptable to indoor living, making them suitable as companion animals. Greyhounds, being larger and more powerful, are often used in professional racing and have a calm demeanor. Both breeds excel in agility and speed, but their size and energy levels cater to different lifestyle preferences.