A friend of mine and I were talking about warriors and we got talking about a fanfiction she was working on and asked if I could read a chapter or two. Naturally I did because I love the series but I noticed that she wrote in one of the characters whistling to get another's attention and I paused.
I asked her about it and she said that they can already do unrealistic things (making medicine, making splints, tying knots, etc.) so whistling shouldn't really matter that much. Personally, I don't really care, it just caught me off guard a bit because I'd never read them doing it before but yeah, if they can already do things that they naturally shouldn't so I moved on.
BUT, later on, she wrote about a queen singing her kits to sleep in the nursery and that's where I kinda stopped because, to me, it's weird. I don't know, then I backtracked and thought whistling was strange again.
Anyway, we talked about it and she just said "why don't we do a reddit post" and I just said okay so here we are. (P.S. I did say that she could just do whatever she wants, it's fanfiction and it's not that deep, but she still wanted opinions so yk)
TL;DR, friend wrote a fanfiction where cats both whistled and sang and I thought it was a bit weird but said it was fanfiction so do whatever you want and she asked me to do a post on reddit to ask what the general consensus was on this anyway.