What is "caudal appendage"

Usage examples of "caudal appendage".

On the other hand, Hrrestan's caudal appendage was curved slightly, showing that he was at ease.

With the practice of many childhood years, Todd reached for the length of rope, carefully frayed at the end to resemble the tufted tip of the Hrruban caudal appendage.

Taking the ape-man by the shoulder he turned him around so that Tarzan's back was toward him and then, touching the end of Tarzan's spine with his forefinger, he curled his own tail up over his shoulder and, wheeling the ape-man about again, pointed first at Tarzan and then at his own caudal appendage, a look of puzzlement upon his face, the while he jabbered excitedly in his strange tongue.

Following that development, the Columi begin living almost entirely in the trees, developing hands in place of claws and evolving a prehensile tail in place of the heavy caudal appendage that they had dragged around as quadrupeds.