work horse..

..of the four wheeled variety.

'Move 'em on, head 'em up,
Head 'em up, move 'em out,
Move 'em on, head 'em out Rawhide!
Set 'em out, ride 'em in
Ride 'em in, let 'em out,
Cut 'em out, ride 'em in Rawhide'