The art below (originally sourced via madam is all) is by the artist mrkotten. You can find the original deviant art post here.
It’s a fun fantasy to be walked like a pet, but I always feel very clumsy in this position. It works for humiliation, but going for a walk at any sensible speed isn’t all that practical. That’s a shame, as I think a lot of submissives would love bounding alongside their owner at knee level.