There are a few memorable companions and pets players can get in Baldur's Gate 3. Most of them are impossible or very difficult to miss but the Owlbear Cub is one that many players miss out on if they don't make some very specific choices.
Baldur's Gate 3: How To Save The Owlbear Cub
There is an Owlbear Cub Baldur's Gate 3 whose life is in danger both before saving the creature and after bringing it to camp.