copula - an equating verb (such as `be' or `become') that links the subject with the complement of a sentence. copulative, linking verb. verb - a content word that denotes an action, occurrence, or state of existence.
Different species of crabs eat different foods. Depending on the species, they may eat plankton, worms, shrimps, prawns and other shellfish, and they scavenge for animal and/or plant remains. 1  They are detrivores. 2  They will consume animal as well as plant matter (algae, etc.).
Large land crabs crawl into our yard frequently. Our dogs kill the crabs, but do not eat the meat. They eagerly eat other game that they kill on the property: iguana, birds who fly to low, occasionally a ferrel chicken. But not crab. Maybe they know something that I do not.