Let's start with the behavior of adults in fandom spaces. Something I've noticed on a pretty regular basis is adults have a pretty nasty habit of assuming that everyone around them is also an adult unless proven otherwise. A large part of furry culture is freedom of expression- many people in the fandom are undoing a lifetime of emotional repression, often expressing this in a sexual manner because they've been afforded that freedom. This is far from a bad thing on its own, but this also leads me into the second point.
Consent. Furries are
awful at and about it in every possible way. Sexual consent, emotional consent, physical contact, respect of boundaries, you name it and furries have violated it. I have not met a single person who's been in the fandom for more than a few months who has not had someone cross a boundary or lapse in consent on some front. People will come into your messages trying to engage in overly familiar roleplay with you, people will casually start talking about their sexual habits without establishing consent, even the more ""woke"" furries can and will push your boundaries if they're not satisfactory. Many furries have had their boundaries eroded away, had their consent violated regularly, and they feel like they have the right to do that to others, often without thinking about or realizing what they're doing.
And here we are at my third point, traumatized teens. Even this has a lot of segments to it, and hopefully I can cover them adequately. A lot of kids entering the fandom are already traumatized and isolated in some way, and are seeking community wherever they can find it. If they choose to stay, they
will be treated inappropriately, it's not a matter of if but
when. Ask any kid who's been around furries, or anyone who's grown up around furries, and they'll tell you that people have tried to engage with them in extremely inappropriate ways. I lost count of all the times (as a minor) people tried to start a sexual RP with me, asked me about my kinks, tried to guide me into talking about nsfw topics with them, tried to get me to engage with nsfw art. An unfortunately common experience of furries I know is adults showing us porn to make us uncomfortable because it was
so funny, they we're just trolling u guyz

((. Then there's the people who would just talk about nsfw topics without ever thinking about it or ever checking your age because "omg you seemed so mature."