I don’t know about front paws, but dogs definitely have less control over their hind legs. During agility training, my dog can easily lift one front paw at a time to jump over something, but she’ll never lift one hind leg at a time. She can do it, but not smoothly while running. I guess it’s similar with the way we can’t seperately control our pinky finger very well. If you move it, the ring finger wants to move as well.