My dog who is part border collie can herd our cats into the corner. When the younger kitty-- who knows not what fear is-- made an escape into the snows the other night via back door, the dog dashed around and around the deck until mate could catch the kitty and bring him back in. The kitty was cross about it. The dog-- delighted whenever she succeeds in rounding them up.
You Tube video-- short-- with cowboys herding cats can be found at: http://www.youtube.com/watch?v=Pk7yqlTMvp8