It's a sculpture. I saw this last year, there's a woman who does these hyper realistic sculptures of human/pig hybrids. She's an Australian artist named Patricia Piccinini. There's that one, and there's one of a woman nursing a litter of kidlets? and some more I don't quite remember. Anyhow they're fascinatingly creepy, kind of force you to consider the humanity of things that clearly aren't human, but still, just sculptures.
Link-O Akshully that is the front of the picture in the OP. Of course, you show the front of the sculpture and your demon hypothesis kind of falls apart, don't it?
^the above poster beat me to the punch!