Related Clues:

• Saddled beast
• Contender in the Belmont
• Plains animal
• Animal providing
• Domesticated animal
• Successful competitor of whom little was known, like colourless equine
• This common sense is of equine origin
• Little-known competitor like shadowy equine
• That's cold, by the sound of it
• One might 14 across and sound rough
• It may have power and sounds husky
• Rough, by the sound of it, by the sound of it
• You don't know the form this nightmare may take
• You can't tell what form this nightmare will take
• It's not light, of course