Stamps with the theme Turtles
Like other reptiles turtles are ecotherms. They are cold-blooded and their internal temperature varies according to the ambient environment. They use their jaws to cut and chew food. Carnivorous turtles usually have knife-sharp ridges for slicing through their prey. Herbivorous turtles have serrated-edged ridges that help them cut through tough plants. Tortoises can vary in size from a few centimetres to two metres. Turtles can take many years to reach breeding age, and in many cases breed every few years rather than annually.
lucanus cervus, salamandra salamandra terrestris, emys orbicularis, bufo viridis, erinaceus europaeus
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