My two youngest can't play in it enough. Obviously, Whippets can't be kept as kennel or outside dogs. Even in warmer climates the rigors of concrete, dirt, insects, and fleas can devastate their sensitive skin. Due to their physical sensitivities and mild manner, they are not guard-dog material, either. However, most will bark to alert owners should someone come to the door.
Whippets do have a well-deserved reputation for stubbornness.
Maybe it's from the alleged bit of terrier in their ancestry. Every owner can tell you tales to illustrate this. I found it out right away with Barbie. Despite her mild manners, when she really wanted something she wouldn't give up. She persisted in staring my parents into giving her food from the table, something no previous dog in our family had managed to achieve.