Mexican musk turtles are found in slow moving bodies of fresh water and, unlike most turtles, can't retract into their shell. Discover facts about Mexican musk turtles with information from a published biologist in this free video on turtles and reptiles.

Expert: Dr. Alan Richmond
Bio: Dr. Alan Richmond is the lecturer and curator of biology at the University of Massachusetts. He is a well-published biologist and has a special interest in reptiles and amphibians.
Filmmaker: Demand Media