People are often not great at tagging, sometimes games like Mutiny!!! get the bestiality tag, but people forget for another game, nor is the tag quantitative, My question is often "Is this really bestiality or is there a single CG with a monster that is kinda sorta a ape."
In High School Crush Simulator you can adapt a stay dog and cat. The game is very much about sexual exploration, so the main character could orginally decide to try bestiality with her dog (somewhat hesitantly. My games are always written realistically, so she is very much aware that this is an extreme thing to do). Two bestiality scenes were implemented for the first version, but removed form the offical release due to Patreon guidelines. The fan mode restores those scenes, but you'll have to install it manually. The mod is linked in the Original Post of the game.
More scenes will be added in the future ni collaboration with that fan, but it will never be an official part of the game. But as long as we have talented modders, that doesn't matter, right?