Sharks are a group of fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Modern sharks are classified within the clade
Selachimorpha (or Selachii) and are the sister group to the rays. However, the term "shark" has also been used for extinct members of the subclass Elasmobranchii outside the Selachimorpha, such as Cladoselache and Xenacanthus, as well as other Chondrichthyes such as the holocephalid eugenedontidans. Under this broader definition, the earliest known sharks date back to more than 420 million years ago. Acanthodians are often referred to as "spiny sharks"; though they are n
Orangutans are born with an ability to reason and think. This large, gentle red ape is one of humankind?s closest relatives, sharing nearly 97% of the same DNA. Indigenous peoples of Indonesia and Malaysia call this ape ?orang hutan? literally translating into English as ?person of the forest.?
In times past orangutans were not killed because the indignenous peoples felt the orangutan was simply a person hiding in the trees, trying to avoid having to go to work or become a slave.
Orangutans are unique in the ape world. Of the four kinds of great apes ? gorillas, chimpanzees, bonobos and orangutans ? only the orangutan comes from Asia; the others all come from Africa. There are t
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
✖
Asian elephant skin is gray in color. Some parts of their skin sometimes lack color, especially on and around the ears, forehead and trunk. This de-pigmentation is believed to be controlled by genetics, nutrition and habitat, and generally develops as the elephant ages. Brownish to reddish hair covers the bodies of young elephants. The amount of hair reduces with age, and the color darkens.
Elephant skin varies from paper thin in some places, such as on the inside of the ears, to as thick as 1 inch (2.54 centimeters) in other places, such as around the back. Despite its thickness, the skin is sensitive, having a rich nerve supply. Elephants protect their skin from the sun and bugs by r
