Here's why:
* Breed history: Italian Greyhounds are thought to have originated in ancient Egypt, while Whippets were bred in England for rabbit hunting.
* Size: Italian Greyhounds are much smaller than Whippets. A full-grown Italian Greyhound typically weighs 7-14 pounds, while a Whippet can weigh 25-40 pounds.
* Coat: Both breeds have short, smooth coats, but Italian Greyhounds come in a wider range of colors and markings.
* Temperament: Both breeds are known for being gentle and affectionate, but Italian Greyhounds tend to be more energetic and playful, while Whippets are often described as more laid-back and dignified.
In summary: While they share some physical traits and are both sighthounds, Italian Greyhounds and Whippets are distinct breeds with different histories, sizes, temperaments, and appearances.