Transparency is a trait shared by all living glass frogs. In some species though, such as the Condor Glass Frog (Centrolene condor), the ventral peritoneum is white anteriorly, obscuring the heart and liver. Photo by Alejandro Arteaga.
Radiated tortoise -- Madagascar -- These tortoises are critically endangered due to habitat loss, being poached for food, and being over-exploited in the pet trade. In March smugglers were arrested, carrying a single bag containing 21 radiated tortoises.