The best way to describe these creatures, 3 legged chicken/monkey/squirrels. These animals are proof that Gods have senses of humor.
These are also known as sourges of the desert sands. Carvitons bare a strong resemblance to their water dwelling cousins, including the large dorsal fin that can be seen in the sands.
A world where, instead of aging in years, the people age in knowledge. So, instead of dying once a general age was reached, they die once they achieve a certain amount of knowledge. A man could live forever if he never learned anything, or could die after reading a few choice books. Of course, the knowledge of the land would be regulated, like medical drugs.