Whippets and Italian Greyhounds look very similar and share many of the same characteristics. They both have lithe bodies, short coats, similar faces, and an inclination toward running.  The big difference lies in their size. At 7-14 pounds, Italian Greyhounds are much smaller than Whippets, which can weigh as much as 40 pounds. And while both breeds are slender, Italian Greyhounds are even more dainty and thin than Whippets.  Featured Image: iStock/Zbynek Pospisil