Having created the list of acceptable types of hybrids, I think I should mention the sort of things that the Group doesn't accept, for clarification.
Sorry! I'm sure there are a lot of great authors with hybrid characters out there, but it's just too time-consuming to confirm that any one piece of literature has hybrid characters in it, or that they play enough of a role in the piece to be accepted into the Group.
Suggestive work is fine up to a point, but there are limits.
Neko's edit I've decided to allow nudity into the group, but anything explicitly sexual will be outright declined. How do I define this? Well, a naked character isn't necessarily going to be sexual. A naked character playing with it's naked bits(or anyone else's bits, for that matter)? Yeah, not allowed here!
Dollmakers and bases
Dollmakers are great for creating quick character references and coming up with ideas, but this group is for things you made yourself; we're not going to judge the quality of your art, but we want it to be your art. Use of bases is disallowed as stolen bases are simply too common; and yes, "stolen" does include "giving credit" to the anime/game/etc it was traced from.
Collabs, including the use of free lineart, are still allowable. Free lineart bearing too close a resemblance to official works will be scrutinized for theft/tracing before being accepted.
Human hybrids and neko/kemonomimi
If your character can be described as "human with animal parts" they should not be submitted to this group. This is a group for non-human characters.
Transformation images involving a human as the originating species may still be accepted depending on how far the transformation has progressed. More on transformation is available in the list of acceptable hybrids.
Tyrannosaur/chameleon is a clear hybrid. Dinosaur/lizard is not.
Wings, horns, fangs, and claws do not qualify a character for hybrid status unless the character shows additional traits of an actual winged/fanged/etc species. A demonic wolf is still a wolf, an angelic fox is still a fox, a vampiric wombat is still a wombat.
Single-species taurs and crossbreeds who only take after one parents
I'm hoping this doesn't actually need to be said, but in the event of nitpicking, here it is. This group is for anthros who display traits of multiple species, after all.
This Group's definition of "anthro" is "humanoid," which can only rarely be judged visually in a character that hasn't got humanoid anatomy; behaviour is difficult to judge in still images. For the time being, members and visitors should not submit quad or feral characters.