Old Leg

To me this photo looks more like a dinosaur than an animal you can find today. The tough skin, hard shell and slow movements of the tortoise make me think of it as a tank rather than a living thing. Amazingly they move somewhat fast when they are hungry and there is lettuce lying around.
Canon 5D, 70-200 f/4.0L
@200 mm, f/4.5, shutter-1/1600 sec, ISO-200
[click photo to enlarge]