http://www.hawaii-aloha.com/ - There are 14 described subspecies of the Galapagos tortoise of which 11 still exist, some with only small populations. There are "dome-shelled" and "saddle-backed" Galapagos tortoises. Where ground vegetation is the main source of food the animals are dome-shelled. Those that feed on higher growing cactus have a curved shell front to allow their longer neck to reach the pads.
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