Crabeater is a term used to describe animals that primarily feed on crabs, such as the crabeater seal. However, there are several synonyms you could use to refer to animals that consume crabs. For instance, you could use the words crustacean-eater or crab-eater to describe these animals. Other synonyms include crab chomper, shellfish muncher, or arthropod devourer. These synonyms would come in handy if you're writing a scientific paper, a nature documentary, or simply want to add some variety to your writing. They help you avoid repetition while still conveying the same meaning.