These were once real creatures. They lived during the late Pleistocene in South America and went extinct roughly 20,000 years ago. They don't really have any close cousins among modern animals.
I got the Macrauchenia model a very long time ago, but never did anything but test renders with it until now. I really like the almost alien look these creatures have. I'm definitely planning on using this model again.
The Macrauchenia were posed in poser then imported into Vue where I constructed the rest of the scene. The render time was approximately 22 hours on an Intel i3 system with 8 GB of RAM.
The Macrauchenia model is from Smith Micro and was purchased from ContentParadise [link]
Everything else is stock vue objects.