echidna, spiny anteater, anteater
['sea anemone, anemone', 'impala, Aepyceros melampus', 'rule, ruler', 'ibex, Capra ibex', 'harvestman, daddy longlegs, Phalangium opilio', 'axolotl, mud puppy, Ambystoma mexicanum', 'sea slug, nudibranch']