* Classic Pillow Pets: The original, iconic Pillow Pets, like the Puppy and Kitty, remain popular choices due to their simplicity and familiarity.
* Unicorn Pillow Pets: The Unicorn Pillow Pet has enjoyed immense popularity for its whimsical design and appeal to children and adults alike.
* Character Pillow Pets: Pillow Pets have collaborated with various popular franchises and characters, such as Disney princesses, Marvel superheroes, and Pokémon. These character-themed Pillow Pets often become highly sought after among fans.
* Limited Edition Pillow Pets: Occasionally, Pillow Pets releases special limited-edition designs that become highly collectible and desirable.
Ultimately, the "most popular" Pillow Pet depends on who you ask and what criteria you use to measure popularity.