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The cover images in volume 213 of the journal all feature mouths and teeth from different members of the animal kingdom. The cover of this issue depicts a crocodilian native to the Indian subcontinent, the gharial. Gharials' jaws are lined with many interlocking, razor-sharp teeth 27 to 29 upper and 25 or 26 lower teeth on each side. The front teeth are the largest. Gharials are listed as 'critically endangered' in the IUCN Red List of Endangered Species.