Stacker highlights the 50 biggest dog breeds, according to the American Kennel Club, from the Irish setter to the mastiff.

Greyhounds can reach up to 45 miles per hour when sprinting. They are one of the oldest breeds in the world, dating back to ancient Egypt. No doubt about it, greyhound dogs are quick. Famous for being ...

On average, the majority of dogs are able to run at a speed of 15-20 miles per hour (24-32 km/h). Nevertheless, a few breeds are such that they are perfectly suited and muscular to have an amazing ...

Dogs that can run at high speeds were originally bred for hunting and herding, including the Border collie and Anatolian shepherd, which both excel at agility and speed and require vigorous exercise ...

No doubt about it, greyhound dogs are quick. Famous for being the fastest dog breed in the world, greyhounds possess truly incredible speed. Seeing them run at full speed is amazing and makes you ...