Mammals questions

Nephron, functional unit of the kidney, the structure that actually produces urine in the process of removing waste and excess substances from the blood. There are about 1,000,000 nephrons in each human kidney.

Moles are pests to agriculture and gardening. However, they do not eat plant roots; they only cause damage indirectly when they dig through soil to find earthworms and other small invertebrates in the soil.

Raccoons are common throughout North America from Canada to Panama. There is archeological evidence that in pre-Columbian times raccoons were numerous only in the Southeastern United States. As raccoons were not mentioned in reports of pioneers exploring the central parts of the United States their spread may have begun as late as 19th century.

Skunks are native to southern Canada, the United States and northern Mexico. The English word skunk originates from languages of American Indians.

Moles are adapted to survive in low-oxygen environments such as underground burrows. They tolerate higher levels of carbon dioxide than other mammals because their blood cells contain a special form of hemoglobin.

The llama is a domesticated South American camelid. The genera Lama and Vicugna are, with the two species of true camels, the sole existing representatives of even-toed ungulates, called Tylopoda.

The giant anteater (Myrmecophaga tridactyla), also known as the ant bear, is an insectivorous mammal native to Central and South America. It is one of four living species of anteaters, the only extant member of the genus Myrmecophaga. It is recognizable by its elongated snout, bushy tail, long fore claws, and distinctively colored pelage.

The red-shanked douc (Pygathrix nemaeus) is a species of Old World monkey, among the most colourful of all primates. The douc is an arboreal and diurnal monkey that eats and sleeps in the trees of the forest.The doucs are, like all monkeys, social animals. They live in groups with an average size of 4 to 15, but groups of up to 50 have been recorded.

The association of African wildcats and humans appears to have developed along with the establishment of settlements during the Neolithic Revolution, when rodents in grain stores of early farmers attracted wildcats. This association ultimately led to it being tamed and domesticated: the domestic cat is the direct descendant of the African wildcat. It was one of the revered cats in ancient Egypt. The European wildcat has been the subject of mythology and literature.

The Dhole is found in Central, South and Southeast Asia. It lives in a variety of habitats, including rainforest and grasslands. This large member of the dog family can weigh up to 40 kg (88 lb); around twice the weight of a Coyote. Dholes resemble members of the Canis genus, and have fox-like reddish fur and bushy tails.The Dhole is a social animal, living in packs of around 12, but sometimes forming larger groups of 30 to 40 animals.