Why is the thumb on the hind foot of a bat called a toilet thumb? Detailed answer

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Why is the thumb on the hind foot of a bat called a toilet thumb? Detailed answer

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Why is the thumb on the hind foot of a bat called a toilet thumb?

The flying membranes stretched in bats between the limbs and tail are mounted on a frame, which is formed by strongly elongated fingers of the forelimbs, metacarpal bones and forearm, while the thumb, equipped with a claw, is free and helps the animals to climb.

It is this bat thumb that is sometimes called the toilet thumb for the following reason. Resting on a "perch" (for example, on a horizontal branch), the bat always hangs upside down, holding onto the "perch" with the fingers of its hind limbs, and when it needs to get rid of body secretions, it grabs the "perch" with its thumbs and rolls over so as not to get dirty.

Author: Kondrashov A.P.

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What characteristics of a person can elephants determine by his voice?

Studies of savannah elephants have shown that they can determine a person's language, age and gender by the voice of a person. When the voices of the Maasai men who hunt elephants with spears were played to the animals, they began to gather together and cover the children. Elephants did not show such a reaction when playing the voices of Maasai women and children, as well as farming men of the neighboring Kamba tribe.

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