NOVA scienceNOW | NOVA Short | Dolphin Reading Test At the Roatan Institute for Marine Sciences in Honduras, a dolphin named Cedana follows commands when presented with a specific image. Video: NOVA scienceNOW | NOVA Short | Dolphin Reading Test / NOVA PBS OfficialIs it reading? Because animals have a limited capability of understanding human language, they cannot “read” the way humans do. Scientists don’t equate symbol use in animals to “reading” in the human sense. Reading requires a deep understanding of human language, which animals lack.