How the human with a tail look? Check out this PS work by lessthanhuman.
"A tail is a characteristic that I feel clearly represents the majority of the animal kingdom. With few exceptions, nearly all other creatures have a tail in one form or another. Developmentally, all human embryos have tails which, for the vast majority of the population, are gone by birth.
I consider the back and spine to be one of the most aesthetically beautiful parts of the human body. In this piece, I tried to preserve that beauty despite the obvious addition of a tail. This piece was an experiment. When I took the stock photo, I immediately knew what I wanted to do with it. It took me several months, however, to muster up enough patience and time to sit down and try to build a tail. I had initially set out to build a thick, reptilian-style tail but as I drew the initial shape, I felt a smaller, thinner mammalian style tail would blend in more naturally with the model's physique. The most difficult part was matching the lighting but I feel like it ended up looking pretty natural…for a tail anyway.
I also pointed the model's ear and made other minor modifications. Expect minor revisions.
Manipulated with Photoshop 7.0. "