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The common warthog (Phacochoerus africanus) is a wild member of the pig family found in grassland, savanna, and woodland in sub-Saharan Africa. [1] [2] In the past, it was commonly treated as a subspecies of P. aethiopicus, but today that scientific name is restricted to the desert warthog of northern Kenya, Somalia, and eastern Ethiopia.
They are pigs who live in open and semi-open habitats, even in quite arid regions, in sub-Saharan Africa. The two species were formerly considered conspecific under the scientific name Phacochoerus aethiopicus , but today this is limited to the desert warthog , while the best-known and most widespread species, the common warthog (or simply ...
The tail is long and thin and is tipped with a small brush of coarse hair. The general colour is mid to dark brown but the crest is sometimes whitish. The desert warthog differs from the bushpig ( Potamochoerus porcus ) and the giant forest hog ( Hylochoerus meinertzhageni ) in having facial warts and proportionately larger tusks.
The human skin is the outer covering of the body and is the largest organ of the integumentary system. The skin has up to seven layers of ectodermal tissue guarding muscles, bones, ligaments and internal organs. Human skin is similar to most of the other mammals' skin, and it is very similar to pig skin.
Another, more permanent, practice that is used in some countries is mulesing, where the skin is removed from young animals to tighten remaining skin – leaving it less prone to fly attack. [27] To prevent myiasis in humans, there is a need for general improvement of sanitation, personal hygiene, and extermination of the flies by insecticides.
Demodex folliculorum is a microscopic mite that can survive only on the skin of humans. [2] [3] Most people have D. folliculorum on their skin.Usually, the mites do not cause any harm, so are considered an example of commensalism rather than parasitism; [4] but they can cause disease, known as demodicosis.
The skin weighs an average of four kilograms, covers an area of two square metres, and is made of three distinct layers: the epidermis, dermis, and subcutaneous tissue. [1] The two main types of human skin are: glabrous skin, the hairless skin on the palms and soles (also referred to as the "palmoplantar" surfaces), and hair-bearing skin. [3]
Treatment is only needed if it is causing symptoms. [3] This may include salicylic acid, cryotherapy, chemo-based fluorouracil or bleomycin, and surgical removal. [2] The skin atop the lesion should generally be removed before treatment. [2] In about a third to two-thirds of cases, they go away without specific treatment, but this may take a ...