Top 10 Fastest dogs are in this video! WOW!! I never knew some of these dogs could run so fast! It is crazy to me! Wait till you see who Number 1 is….and how fast they can run. I grew up with a Jack Russell Terrier in my home and I didn't realize the breed could run over 20 MPH. I knew that he was a fast dog and loved to run all over the countryside. This video is full of amazing information! Feel free to share about your dog and how fast they can run. This is a great video! Enjoy!