Not just for the shell of it: red-footed tortoises have been observed eating sand, which scientists think may help break down rough plant materials.

ORIGIN:
South America

HABITAT:
Forests and savannas

HEIGHT/WEIGHT:
Length: 1 ft

DIET:
Fruits and decaying plant and animal matter

PREDATORS:
Unknown

NATURAL DEFENSES:
Tough shell

REPRODUCTION:
Sexually mature at 5 yrs

THREATS:
Habitat loss and human hunting

LIFE EXPECTANCY:
50 yrs