... possessing a venomous toad, equipped like a snake with regular poison-glands and fangs. He is known in the vernacular as escuerzo, and is rather a handsome creature, wearing a green black-striped coat. I am told by learned people that he is not a true toad, that his proper name is Ceratophrys ornata, and that he is a cannibal, feeding on harmless frogs and toads which he kills with his poison-fangs. There was a plentiful supply of these creatures at Espartillar, and the pupils, when they found an escuerzo, ... — Here, There And Everywhere • Lord Frederic Hamilton