Oh man, there’s a lot. There’s furry porn to begin with something really light. It’s basically normal porn but with the people changed to anthropomorphic animals. The fact that it is pure fantasy makes way for some exotic options such as vore, IE swallowing another person whole. This can be found a little bit all over the place. Any of the mainstream pornsites are bound to have atleast some. You can find some on r/yiff but it’s pretty vanilla stuff. You can also find it on DeviantArt with a little bit of searching.

You’ve probably already heard of hentai, it’s the pornographic side of the japanese entertainment medias anime and manga. Found everywhere. There’s probably an r/hentai

Tentacle porn is common within hentai and also occurs in live action pornography.

There’s inflation porn/belly inflation and it is pretty much exactly what it sounds like. A person, commonly female, puts a tube up her ass and pumps her belly full of air resulting in pregnancy belly without pregnancy. Can be found on pornhub and probably xvideos, xnxx etc.

And now to delve into the sketchy side of it. Bestiality. Pornography featuring actual animals. This is illegal in many places but if you’re feeling risky you can always visit k9vidz.net or zoosexfarm.net/com forgot which.

That ought to keep you occupied for a while.