Harry Sawyers of This Old House Magazine's Hardware Aisle section sent in this one: an aptly named dog (and cat) grooming tool called the Furminator.
The "lab-rador tested" tool is not exactly a brush; rather, the teeth dig in to clear out the matted undercoat while leaving the shiny topcoat intact. The undercoat, apparently, contains as much hair as an entire pack of dogs.
I couldn't help but imagine some hapless photo assistant sent down to the local Mutt Cuts, dragging a bag full of fur back to the studio to get this shot. The company insists, though, that these shots show actual results.
Egad! That's a lot of fur! Link - via This Old House, Thanks Harry!