Anatomy and function of the penis

The male penis consists of the root, shaft and glans. When a man is sexually aroused, his brain sends signals to the nerves in the erectile tissue in the shaft. The penis becomes stiff and erects. Translation and dubbing: alugha Click here to see more videos: https://alugha.com/TerraX

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Endangered lion populations

Lions play an important role in the ecological balance in their habitats. This was already the case two million years ago. In the meantime, many populations are threatened with extinction. The situation is particularly critical in West and Central Africa. https://www.zdf.de/dokumentation/terra-x/b

Horses as weapons of war

In Mongolia, horses were already indispensable for warlords 800 years ago. Without them, the conquest and administration of this great empire would not have been possible. The history of war is therefore also a history of horses. Author: ZDF/Terra X/ E. Rauert; N. Bergenthal, Oliver Roetz, renderba

Infrasound - How elephants communicate

Elephants live in a close community in which communication is essential. The animals often communicate in very low pitches. The so-called infrasound is imperceptible to the human ear. Authors: ZDF/Tango Film/Eva-Maria Gfirtner, Judith Adlhoch/Markus Strobel/Jan-Philipp Stahl/Magnet fx Translation