POSTCARD OF RUSSIA 2021 - Frogs. (4 postcards)
Frogs are a group of animals of the order of tailless amphibians, uniting more than 400 species. Distributed on almost all continents, they prefer mainly fresh water bodies.
The peculiarities of the representatives of this family include the absorption of oxygen through the skin, the absence of a tail, a pronounced neck and intercalary cartilage between the phalanges of the fingers. They have unique vision, do not close their eyes while sleeping and are able to look forward, up and to the side at the same time. The color of the skin is very diverse, it can be brownish, yellow, green or unusual variegated, which makes it possible to camouflage well under herbaceous vegetation, foliage or branches. Frogs are of great benefit to people, actively destroying and eating many harmful and dangerous worms, bugs and insects. Some species are characterized by the ability not only to swim perfectly, but also to run, walk, quickly climb trees and even glide easily from a height. 10 species of frogs live on the territory of the Russian Federation - Far Eastern, Asia Minor, lake,
Postcards depict pond frog, Far Eastern frog, Asia Minor frog and Siberian frog.
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