Gerbils form the subfamily Gerbillinae, a large group of more than 80 species. They have a wide range of native land during most of Africa and parts of Europe, stretching across Mongolia Asia and China. Gerbils tend to live in arid areas, having adapted in various ways, to the scarcity of water. By dig during the hottest part of the day, they protect against dehydration. Then at night they venture forward to get seeds and similar foods that, in the quick fall of temperatures, obtain a spray cover. This provides the vital source of fluid. Not in vain, digestive system of the gerbil is very effective in the absorption of water and the kidneys are capable of producing a very concentrated urine, ensuring that vital body water loss is kept to a minimum.
The color of the coat of skin of gerbils reflects their natural environment. Those who live in sandy areas, for example, can have very pale fur coats. However, the hair of the tail has a more dark bushy tip, and this can serve to confuse predators. As some lizards, gerbils can lose part of the tail and survive, despite not regenerated. The tail is an important part of his Anatomy, however, that it helps to provide balance to the body when the gerbil is standing on their hind legs or jumping. In fact, they can jump considerable distances, depend on powerful muscles in the upper part of his legs to provide the necessary impetus to erase distances.
Similar to other creatures that live in open with little natural cover, gerbils have a very acute hearing, despite its rather small ears. The bone capsule that surrounds the middle ear expands enormously and serves to amplify even the slightest sound. Their sense of vision is also well developed. The eyes are prominent and positioned to provide a wide field of view and give them the ability to detect the slightest movement nearby.
Gerbils are social creatures, living in groups. By day, may even seal the entrances to their burrows. This helps keep the temperature slightly lower internal and can cause condensation droplets of water in the burrow. A typical colony can consist of up to three men and seven women, with some young people who live in the group. Collectively, be they feed digging if needed for the roots that can serve as an emergency water supply.
From a group established it will not tolerate the newcomers, seems that it would have a high degree of breeding within each colony, but studies of captive stock revealed a unique system that avoids this need. Women leave their colony and mate with a male of a group of neighbor, before returning to the established family colony to give birth and raise their children. Given that many species of gerbils live in remote and inhospitable areas of the world, however, we still have much to learn about their natural lifestyles.
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