A liveried groom, generally small, generally young. An owner-driven curricle or phaeton typically had a groom’s seat between the springs on which the tiger sat. The single-horse cabriolet had a platform at the rear on which the tiger stood. He also managed the horses when his master ascended to or descended from the seat, and sometimes took the reins to exercise the horses while his master temporarily left the vehicle. A small, lightweight tiger was preferred in order to maintain the proper balance. In fact, it was something of a status symbol to have the smallest possible tiger.
The print shows a curricle with a tiger in the groom's seat. “The Marquis of Anglesey Driving his Curricle” – lithograph after Henry Graves. From the book The English Carriage by Hugh McCausland.