Pet Owl

Common in works set in a world of magic and mystery, owls are often seen as pets or familiars. In some stories, owls are even able to speak, and can communicate perfectly with their masters. These kinds of owls can easily play a serious role in dramatic works, or serve as comic relief in more lighthearted stories.

It's worth noting that in the United States at least, it's illegal to obtain an owl without a license. So most pet owls in real life are often found in places like rescue homes, where the goal is to return them to the wild after saving them from certain death.

Can overlap with The Owl-Knowing One and Familiar.

Anime and Manga

 * Ash's Rowlet in the Sun and Moon season of the Pokémon anime is a formidable fighter despite never evolving, but is usually portrayed as a goofy and adorable pet who serves as a main source of comic relief when he isn't kicking ass.

Fan Works

 * In Just Taken, Melanie revealed that she had raised an owl named Archimedes when she found her as an owlet, and would feed her dead vermin as part of her meals. Since it's illegal to keep an owl as a pet, she was forced to keep her outdoors so she could be raised properly as a wild animal. And yet, Archimedes opted to stay around, having found a place to serve as a makeshift owl hole.

Literature

 * The Once and Future King has Merlin's pet owl, Archimedes. As one would expect from an owl owned by one of literature's most famous wizards, he's fully capable of talking to people.
 * Owls are a common pet in the Harry Potter series, and are often employed as the settings' equivalent to postmen. Harry's snowy owl Hedwig is the most prominent example, serving as a beloved companion.

Tabletop Games

 * The Yu-Gi-Oh! card game has a couple of examples:
 * "An Owl of Luck" is a support monster for "Necrovalley" (and by extension the "Gravekeeper's" archetype).
 * "Fluffal Owl" is a plush owl that is part of the "Fluffal" archetype.

Video Games

 * Monster Hunter Rise has Cohoots, adorable little owl companions that are trained by the monster hunters of Kamura Village. Their main purpose is to fly around and keep an eye out for monsters roaming around any given area, but you can play with your pet Cohoot when you're relaxing in town between missions.
 * In the Pokémon franchise, Hoothoot and Rowlet are small, cute, and conventionally petlike, but evolve into far more formidable birds once sufficiently trained. That said, Hoothoot's evolution Noctowl and Rowlet's evolutions, Dartrix and Decidueye, are just as receptive to petting and treats as their pre-evolved forms are.