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Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs .
More than 99 percent of all species, amounting to over five billion species, [7] that ever lived on Earth are estimated to be extinct. [8] [9] Estimates on the number of Earth's current species range from 10 million to 14 million, [10] of which about 1.2 million have been documented and over 86 percent have not yet been described. [11]
The following is a list (taxonomically organized) of the breeding species of which at least 70% of their North American population rely upon the boreal forest for nesting. If the boreal forests were cleared, these species would almost surely perish or be endangered. Red-necked grebe. Surf scoter, Melanitta perspicillata [1]
The bald eagle is the national bird of the United States and appears on its Great Seal.The bald eagle's range includes all of the contiguous United States and Alaska.. The fauna of the United States of America is all the animals living in the Continental United States and its surrounding seas and islands, the Hawaiian Archipelago, Alaska in the Arctic, and several island-territories in the ...
This is a list of North American mammals. It includes all mammals currently found in the United States, St. Pierre and Miquelon, Canada, Greenland, Bermuda, Mexico, Central America, and the Caribbean region, whether resident or as migrants. This article does not include species found only in captivity.
Most species are social animals, living together in family units or small groups and behaving cooperatively. ... 1940 – one species Common name ... Habitat: Forest ...
The Amazon rainforest is a species-rich biome in which thousands of species live, including animals found nowhere else in the world. To date, there is at least 40,000 different kinds of plants, 427 kinds of mammals, 1,300 kinds of birds, 378 kinds of reptiles, more than 400 kinds of amphibians, and around 3,000 freshwater fish are living in Amazon.
The subfamily Felinae includes 12 genera and 34 species, such as the bobcat, caracal, cheetah, cougar, ocelot, and common domestic cat. [ 5 ] Traditionally, five subfamilies have been distinguished within the Felidae based on phenotypical features: the Felinae, the Pantherinae, the Acinonychinae (cheetahs), the extinct Machairodontinae , and ...