Greyhounds rarely bark, usually only when something is wrong or when they get very excited. If you want a guard dog, the Greyhound is not the breed for you. They will watch everything - but that's usually as far as they go. For most Greyhounds, everyone they meet is greeted as a friend. Greyhounds are great leaners and may rub up against your leg like a cat.
Some individuals are a little more aloof when in the company of strangers.
In fact, with the exception of the cheetah, the Greyhound is the fastest creature on earth. These are breeds which hunt their quarry primarily by sight rather than scent. Although the Greyhound has been used for hunting various species over the centuries, their natural quarry is the hare. Male Greyhounds range from 67 - 72cm in height and approx. 30 - 35 kg in weight.