jk rowling: It was never mentioned but Snape always had a pet horse that followed him around everywhere .It was not written because he just never mentioned it ,but the horse was definitely there
the author of this post: I’m bitter because a children’s book told entirely from the perspective of a preteen-to-teenage boy didn’t include every single minor detail about every single character he met. Characters obviously have to share everything about themselves with everyone because that’s what humans do, especially figures of authority (like schoolteachers) with minors.
me: Snape horse
this person: *immediately has a breakdown*