whistles

I am loving Horizon Zero Dawn. It is so much fun to play. I can be stealthy or just run around destroying things. I also get to hijack mecha-animals and ride on them! There is so much to do and I'm trying to do em all! They have a great mechanic that really pays out so well in the whistle. You can lure people and mechs to separate them from herds and groups for silent kills. The only problem is you also can whistle to beckon your previously hijacked mecha-nimals to you to ride. Needless to say I don't pay attention, and often find myself using the wrong one...