They can, however, keep up with you if you want to take them biking or running. Just like you, they'll need to work up to longer distances gradually. Greyhounds and leashes . Greyhounds must always be on a leash when not in a completely fenced in area. No exceptions, ever.
Greyhounds are the oldest breed of dog.
They are sighthounds. For more than 5,000 years, they have been bred to chase. They can run at speeds of up to 45 mph. This means they might go after a piece of litter in the wind and find themselves in front of a car before you or the driver has reacted. No matter how well trained your dog is, nothing is as strong as mother nature.