Think you know fast dogs? Think again – can you solve this crossword clue?

Thin and flexible instrument for punishment:
Thin and flexible instrument for punishment.

Driving aid used by charioteers:
Driving aid used by charioteers.

Sound made by a person in charge of animals:
Sound made by a person in charge of animals.

Paddle-like instrument used in rowing:
Paddle-like instrument used in rowing.

Command used in horse racing to make the horse run faster:
Command used in horse racing to make the horse run faster.