you could always make a test batch of various species, and see what people think of them

Anthro adopts tend to sell best, but they tend to be a lot more work. Another tip is making your own species, since no one else would have those, and they're less "generic"

And I'm picky with the adopts I'll buy, but I'll keep an eye out if you decide to make any!

Thank you very much for the feedback, very helpful.

I will definitely try out the things you've suggested.
This will be hard anyways, since I am not popular.