grey hound
The fastest breed of dog is probably the greyhound but poodles love to run and are very fast.
The fastest known breed of dog.
the welsh springer spaniel is the most uncommon breed in the us
The greyhound is one of the fastest, but I think the Saluki could be a close competitor as well.
Most likely the Italian Greyhound.
The Fastest dog breed is the Greyhound.
There is not a specific dog breed that is smarter than any other dog breed in the world than there is in the USA, but the smartest dog breed are poodles.
The US.
Since Jack Russells are the 13th fastest dog breed in the worl, I would say they are probably the fastest terrier. I know some one that has a Jack Russells and I have a Rat Terrier and my dog is faster. So i think that a Rat Terrier is the fastest.
The most common breed used for racing is the Greyhound as they are the fastest breed. Greyhounds are known to reach speeds of 72km/h.
We can't answer your question, because you do not give us a breed of dog. Please restate your question