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Moles are members of the family (Talpidae) of mammals in the order Soricomorpha that live underground, burrowing holes. Some species are aquatic or semi-aquatic. They have cylindrical bodies covered in fur with small or covered eyes; the ears are generally not visible. They feed on small invertebrate animals living underground. Moles can be found in North America, Europe, Asia and the eastern seaboard of Australia.
Male moles are called boars; females are called sows. A group of moles is called a labour.
A mole's diet is primarily composed of earthworms and other small invertebrates. The mole will also occasionally catch small mice at the entrance to its burrow. Once the food is caught, the mole will either store it for later or feed it to its young.
The Star-nosed Mole can detect, catch and eat food faster than the human eye can follow (under 300 milliseconds).[1]
Darwin cites moles as an example of organs being phased out:
<blockquote> The eyes of moles and of some burrowing rodents are rudimentary in size, and in some cases are quite covered by skin and fur. This state of the eyes is probably due to gradual reduction from disuse, but aided perhaps by natural selection. In South America, a burrowing rodent, the tuco-tuco, or Ctenomys, is even more subterranean in its habits than the mole; and I was assured by a Spaniard, who had often caught them, that they were frequently blind. One which I kept alive was certainly in this condition, the cause, as appeared on dissection, having been inflammation of the nictitating membrane. As frequent inflammation of the eyes must be injurious to any animal, and as eyes are certainly not necessary to animals having subterranean habits, a reduction in their size, with the adhesion of the eyelids and growth of fur over them, might in such case be an advantage; and if so, natural selection would aid the effects of disuse. (Charles Darwin, The Origin of Species, Laws of Variation)</blockquote>
The family is divided into 3 subfamilies, 7 tribes, and 17 genera:
Moles are considered to be an agricultural pest in some countries, while in others, such as Germany, they are a protected species. Problems caused are cited as contamination of silage with soil particles making it unpalatable to animals, the covering of pasture with fresh soil reducing its size and yield , damage to agricultural machinery by the exposure of stones, damage to young plants through disturbance of the soil, weed invasion of pasture through exposure of fresh tilled soil, and damage to drainage systems and watercourses. Other species such as weasels and voles may use mole tunnels to gain access to enclosed areas or plant roots.
Moles that burrow in the lawns of humans can disturb the earth, raising molehills and causing enough aesthetic problems to be considered as pests. They do however benefit the soil by aerating and tilling it, adding to its fertility. Contrary to popular belief, moles don't eat plant roots.
They are controlled with traps and poisons such as calcium carbide and strychnine.
Moles are considered to be a very dirty, smelly and filthy animal in India. The Hindi word for a mole, viz., छछुन्दर , when used for a man, implies a very filthy and cowardly person.
Other similar animals are found in family Chrysochloridae (the golden moles) and family Notoryctidae (the marsupial moles) which are not related to true moles.
There are also similar-looking but herbivorous rodents called mole-rats that lead a similar life-style and are commonly called "moles", although, unlike mole-rats, no species of true mole is known to be eusocial.