<iframe width="580" height="385" src="https://www.youtube.com/embed/psLfilTUuaI?autoplay=1" frameborder="0" allowfullscreen></iframe> <br>Gelada monkeys have adapted for a life spent mostly on the ground, which has produced unique aspects of their anatomy and ... <br><a href="https://www.youtube.com/watch?v=psLfilTUuaI">source</a>