Support, for all parties involved!
I know from experience in several creative communities that triggers can be a difficult topic for everybody involved, and I've experienced it both as a creator and as a consumer. There's a lot of emotions there, and it can intersect with past trauma for both sides.
If there can be any kind of spoiler / trigger warning system (borrowing terms from my time writing in discord communities that allow people to opt in or out of and be aware of possible triggers) where both creators and consumers are comfortable I highly support that.
I would also ask that if it's possible an awareness post on triggers is created somewhere that people can access? Is that something that people would find beneficial?
The specific issue that the original post brought up was about certain species / animals and that's important, but I'm also wondering if it would be helpful to make people aware of what a trigger is, what a trigger warning is, and what it means to implement them so that both creators and consumers can be safe on the site. This could be something very simple, like: a censoring system allows for users to opt in and out of the content they see so that they can protect their mental and physical health - for instance, avoiding eye horror or common phobias like snakes and spiders - so that everybody can enjoy CS (snakes and spider lovers included). If other folks think an informational post somewhere might be helpful then I think that should be included as part of addressing the safety of both parties. If that's not applicable here that's fine too, I'm not sure.
I also think if it's not feasible for a user to hide individual pets in a system, but it is feasible to have a censoring system for a species or a predetermined group of pets, then it's entirely possible to create "trigger" groups that will encompass a good amount of what people face, especially if given the opportunity for community feedback. I know the common reaction is "it's impossible to encompass every trigger" but I can tell you from experience that that's not a reason not to do it, and it hasn't stopped people from doing it in the past. It might not encompass everything, but something is always better than nothing, and in my experience it works really well. We're already curating a trigger list here - body horror, eye horror, snakes. If such a list were curated, it should be made clear throughout the process that it isn't a "I don't like this pet" list, but it also shouldn't invalidate anybody's trigger.
I'm worried about pointing to individual pets and saying "this is a problem." However, any trigger protection system in this circumstance would have to identify and categorize specific pets. Therefore, the idea of a user-choice censor system seems much better than a curated "pet trigger list" in my opinion. But if it is more feasible to create a censor system that can't be individually modified (as in having groups of pets that you can censor rather than being able to individually censor any pet) then I hope a trigger list can be on the table.
That's my two cents! Do with that what you will. In respect of my own boundaries, I've tried not to contribute until I've been sure that I can say something helpful and not make any problem worse, and I hope this post is helpful in that way and that my experience and love of trigger systems can be useful in implementing something to CS that makes the cite better for everybody involved.