He is a fast/slow 'walker'. [=he walks at a fast/slow pace]
She joined a group of 'walkers' in the neighborhood.
(..) We'll round them up. So... - What do you got there? - I've decided to adopt Ripley. - Bones... - I've already contacted a dog walker and a doggie day care place, and my dad will take him when I leave town. I got a little tag. See? Ripley Brennan. (..)2008 TvShow: Bones Title: The Finger in the Nest Season: 4 Episode 3