Helen, Martha, Skits, T.D., Alice, Milo, and Lily are playing Red Rover in the Lee yard (even though Martha dislikes it). Milo then reveals that he has a loose tooth, but Martha doesn't understand what the big deal is. The kids explain about the Tooth Fairy, then Martha observes that Lily also has a loose tooth.
The next day, Milo reveals to Helen, T.D., and the Lorraine dogs that he got a comic book from the Tooth Fairy but Lily got nothing. This makes the humans and Lily sad, and Martha angry. Martha insists that the Tooth Fairy doesn't like dogs, but Helen and T.D. think that she just made a mistake, since dogs have no pillows to put their teeth under. Martha decides to appoint herself the Puppy Tooth Fairy. Helen makes Martha a costume consisting of a wand, tutu, and fake wings, Martha decides to give dog food as presents, and Skits decides to be Martha's assistant to help her carry the dog treats. He is also given a pair of fake wings.
That night, Martha breaks into the Lee house and Terrence nearly catches her, but doesn't. Skits forgot to bring the biscuits, so he and Martha decide to give Lily a stick instead. However, after giving it, Martha accidentally awakens Lily, so she runs out and calls herself the "worst Puppy Tooth Fairy ever". However, she perks up when Milo (who was woken by Lily) sees Martha's wand lying on the ground and thinks the Tooth Fairy must have left the stick.
The next morning, someone phones up and reveals that Mandarin, Streak, and Butterscotch have also lost teeth, since Milo told his friends. They deliver the dog treats to the puppy trio (despite having a close call when Skits stands on a squeaky toy), but are tired the next day at the park, which worries Rinty. He also reveals that Bob lost a tooth, so Martha and Skits play Puppy Tooth Fairy for him.
The next day, Martha is starting to get frustrated with being the Puppy Tooth Fairy due to the lack of sleep, but she and Skits have to deliver to puppies with lost teeth at the shelter. There, they see a kitten and Martha feels sorry for her so decide to become Kitten Tooth Fairies as well.
The next day, Martha and Skits are very tired from the lack of sleep. Helen notices this and reveals that the puppy triplets and shelter puppies have lost more teeth, and so has Tiger Baby. Martha falls asleep and dreams that she has to collect Jeffy's lost tusk and a whale's lost tooth, and then a real Puppy Tooth Fairy appears and agrees to take over.
When Martha wakes up, it turns out that she and Skits slept through the night and thus the animals weren't visited. However, it then turns out that someone unknown had delivered treats to them after all. Martha then sees a doggie treat in her chair, and takes this as a sign that the Puppy Tooth Fairy really exists, but it's never revealed who delivered the treats.
This episode provides examples of
- Afraid of Needles: Martha gives getting a shot as an example of something bad to anticipate.
- Amusing Injuries: Martha keeps hurting herself bumping into things while carrying things in her mouth, and at one point Terrence steps on her tail.
- And Your Reward Is Edible: In Martha's dream, the Puppy Tooth Fairy thanks her for her hard work with a doggie treat.
- Buffy Speak: Martha calls the Tooth Fairy a "meanie-head".
- Friend to All Children: Martha gets mad at the Tooth Fairy for making Lily (a puppy) sad.
- Contrived Coincidence: Milo and Lily manage to both get loose teeth at the same time.
- Exhausted Eye Bags: The sleep-deprived Martha is drawn with eye bags.
- Half-Dressed Cartoon Animal: Martha wears a tutu as the Puppy Tooth Fairy.
- "I Can't Look!" Gesture: Skits covers his eyes when Terrence nearly catches Martha.
- Inconvenient Itch: When Skits must stay still so that the toy he's standing on won't squeak, he's tempted to move by a fly landing on him.
- Loose Tooth Episode: What kickstarts the plot is Milo and Lily both getting loose teeth and the Lorraine dogs deciding to be animal tooth fairies after Lily gets no present.
- Loud Gulp: Martha gulps when Terrence walks in, fearing he'd catch her.
- Maybe Magic, Maybe Mundane: It's unknown if the Puppy Tooth Fairy really does exist, or if someone else (perhaps Helen's parents if they saw how tired the dogs were) delivered the treats to the animals.
- My New Gift Is Lame: Helen complains that all she gets from the Tooth Fairy is toothbrushes.
- Slapstick: In addition to the Amusing Injuries, Martha falls out of her chair when the phone wakes her up.
- Sleep Deprivation: Martha and Skits end up very sleepy the day after after playing Puppy Tooth Fairy late at night, which ultimately leads to them giving it up.
- So Much for Stealth: Skits accidentally wakes up Mrs. Clusky's nieces and their parents by stepping on a squeaky toy. Luckily, it's after the delivery, so they can run off without being caught.
- Speak in Unison: When Milo reveals that he has a loose tooth, his human friends say, "Cool!" at once.
- Still Believes in Santa: Bob is a grown dog, but he still hopes to get a visit from the Puppy Tooth Fairy.
- Tooth Fairy: The episode involves Martha and Skits trying to work as tooth fairies for animals after hearing the story of the Tooth Fairy.
- The Tooth Hurts: Apparently, Bob lost a tooth as well as the puppies, but it's never stated how. However, he's a grown dog so it can't have fallen out naturally.
