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Source(s): I eat 'em. Chitterlings / chitlin's are pig intestine and cracklin (or chicarones in Spanish) is fried pig skin with the fat and a bit of the skin on it. You see, there is 100% truth in the saying: You can everything but the oink. Genius Cook Â· 6 years ago.
Chitin is a substance found in the shells, or exoskeleton, of horseshoe crabs, as well as other arthropods, such as lobsters, crabs, shrimp, spiders, beetles, and mosquitoes. Chitin has received a lot of attention from scientists because it is non-toxic and biodegradable.orseshoe crabs belong to the phylum, Arthropoda, along with crabs, insects, and other invertebrates with jointed legs, but their closest living relatives are spiders and scorpions. True crabs have two pairs of antennae and a pair of mandibles, or jaws; horseshoe crabs lack these structures.