whippet

/ˈwɪpɪt/
noun
  1. A small, slender, fast dog bred for racing and coursing, similar to a greyhound but smaller.
    • My neighbor's whippet can run faster than any other dog in the park.
    • The whippet curled up on the couch, looking more like a cat than a dog.
    • She adopted a gentle whippet from the rescue shelter last spring.