Crossword Genius

Small horse such as Misty of Chincoteague (4)

Ross

I believe the answer is:

pony

(Other definitions for pony that I've seen before include "staked 25" , "Small horse - PS25" , "Arab possibly" , "Twenty-five pounds; small horse" , "(girl's pet, perhaps)" .)

I've seen this clue in the USA Today.
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