Finding images of aliens on the internet basically amount to either one of four possibilities. 1. they are dummies in other words "man-made" 2. they are CGI images 3. they are real but not authentic alien in other words "photoshopped real-life" or 4. a real alien.

This image caught my attention (can't remember where I found it but that doesn't matter anyway) and could be authentic, obviously dead. If this is a dummy, there's been no expense spared here!