Pet Owl

Common in works with people of magic, an owl might end up living their respected folks. In some works, owls are even able to speak, just like their human families. Owls in this trope could play a serious role or become comic relief in the character's life.

It's worth noting, in the United States at least, it's illegal to obtain an owl without a license. So, owls in real life living with humans are often found in places like recuse homes, where the goal is being able to return to the wild. Still, owls could play a part in the story either as a minor role or an important character.

Contrast with The Owl-Knowing One, where the owl is definitely not a pet, or Familiar, where the owl (or other animal) is much more than a pet.

Fan Works

 * In Just Taken, Melanie revealed that she had raised an owl, Archimedes, when she was an owlet, even bringing dead vermin as part of Archimedes's meals. She had to let the owl live in the wild, as that was home for Archimedes. It was illegal for anyone to keep an owl as a pet. Yet, Archimedes opted to stay around, having found a place to into a makeshift owl hole.

Literature

 * The Once and Future King has Merlin's pet owl, Archimedes. Archimedes is able to speak, but still reminds plenty that he's an owl.
 * Harry Potter series, Harry's pet snowy owl, Hedwig. Hedwig plays a serious role in the series.