We have a 2 yr. old spayed female black lab. She still has some "puppy" exuberance so dh and I exercise her alot. One of her favorite things to do is to ride on the quad with dh when they go to check out the lower property. On the way back dh lets Ruby run along side the quad and he "clocked" her going 34 mph. yesterday!! Are labs known for speed? Have never had a dog that could run so fast!!