Possible Clues:

• Long to go down for the rabbit
• It digs out rabbits
• That predator may be more than one foot long at the ends
• Long to be a little predator
• Animal trained to catch rabbits
• Small weasel good at hunting rabbits
• It''s so beastly long to be worrying about ''er
• Hunt out - animal
• Small fierce animal used to hunt rabbits
• Detective sort