context: This is the story of LucÃ­a, a restless kid who suffers a domestic accident and loses a tooth. Santiago, her father, an unemployed chef and Pilar, her mother, a successful architect with work to spare, ease her with the illusion that RatÃ³n PÃ©rez will stop by her room that night, take her tooth and replace it with some money. What they don't know is that the alert sign is already being spread...
  A little mouse spying the situation warns another mouse who then warns another who warns another who finally warns... RatÃ³n PÃ©rez! who lives on a boat anchored at the port along with hundreds of mice who gather the teeth, clean, sculpt and polish them to turn them into shiny round pearls. These are taken through the city sewers to a jewelry store own by Morientes - an old friend of PÃ©rez that trades them paying the teeth's weight in gold coins.
  What should have been a routine job for the mythical mouse won't be tonight since the most heartless and ambitious thugs decide to kidnap PÃ©rez and take control of his boat and his fortune.
  This would be the end of the story for everyone except for LucÃ­a who - with the help of her cousin Ramiro - disobeying her parents and not measuring the consequences will try to rescue PÃ©rez unleashing a fascinating adventure that will prove that you don't have to be a kid to believe.
  The story was based partially on the Ratoncito PÃ©rez, a character in Spanish folklore similar to the Tooth fairy.
question: What type of animal is the Hairy Tooth Fairy?
answer: It doesn't say but probably a rat or a mouse.