「Mammals」に関連した動画の一覧

	MAMMALS  The biggest creature that has ever lived, the blue whale, is a mammal. So too are tiny pygmy shrews, giant pandas and human beings. Mammals are an amazingly varied group but they are all warm-blooded vertebrates. They have a bony skeleton and hair on their bodies at some stage of their lives. All mammals feed their young on milk from their own bodies and adult females have mammary glands for producing this milk. Mammals are generally agreed to be the most intelligent of all animals and they have the most highly developed nervous systems. Most mammals have four limbs, but in some these have become adapted into flippers for swimming power (seals and whales) or even wings (bats). There are about 4600 species of mammal. Most live on land, but whales, dolphins, seals and sea lions are among those that have become adapted to life in water. Bats wings are made of skin stretched over a flexible bone structure like the human hand, so they can control their direction very easily. This makes them expert fliers and they spend much of the time in the air. Mammals are usually divided into three groups—monotremes (egg-laying mammals), marsupials (pouched mammals) and placental mammals. The placental group is by far the largest. 2009年04月16日再生回数 21551
	Triumph of the herbivores - Life of Mammals - BBC  Stunning footage of herbivore mammals out-maneouvering their carnivore predators. Includes indredible shots of zebras, gazelles and buffalo being persued by cheetahs, lions and even baboons; making death-defying escapes. From the BBC's Life of Mammals documentary series. Visit www.bbcearth.com for all the latest animal news and wildlife videos and watch more high quality videos on the new BBC Earth YouTube channel here www.youtube.com 2010年06月14日再生回数 92147
	What is a mammal?  Learn what makes a mammal a mammal. After watching video try our animal classification game at www.sheppardsoftware.com Or read more about animal classification here: www.sheppardsoftware.com 2009年05月21日再生回数 26511
	Mammal Classification  Explains how mammals are classified. Increase your appreciation for mammals. Find more animal activities and games at www.sheppardsoftware.com 2009年06月03日再生回数 16563
	Newborn Baby Grey Kangaroo - Attenborough - Life of Mammals - BBC  Amazing footage of a grey kangaroo giving birth and the development of a joey in his mother's pouch. This clip from the BBC's Life of Mammals looks at the development of different ways of giving birth that have developed in Australia. Visit www.bbcearth.com for all the latest animal news and wildlife videos and watch more high quality videos on the new BBC Earth YouTube channel here www.youtube.com 2009年07月25日再生回数 571760
	Human Mammal, Human Hunter - Attenborough - Life of Mammals - BBC  Human bengs are a particular type of mammal. In this compelling clip, we see a tribesman runner persue his prey through the most harsh conditions in a gruelling eight hour chase. Thought provoking content from the BBC's Life of Mammals documentary series. Visit www.bbcearth.com for all the latest animal news and wildlife videos and watch more high quality videos on the new BBC Earth YouTube channel here www.youtube.com 2009年11月07日再生回数 375088
	What is a Mammal?  This short enhanced podcast provides an overview of mammal characteristics. Excerpt from an interview with Dr. Ross MacPhee, curator and researcher at the American Museum of Natural History. This video is part of the Beyond Penguins and Polar Bears magazine issue: Mammals. beyondpenguins.nsdl.org 2008年12月04日再生回数 18823
	The Evolution of Mammals (Episode 1: Meet the Synapsids)  Happy Valentine's and Darwin Day! First of a 4-part series: we introduce mammals and their synapsid ancestors. A list of references/supplementary readings will be provided with the last episode for anyone who wishes to explore the subject further. Music by Kevin MacLeod (incompetech.com) under CC Attribution License 3.0 - Serpentine Track - Radio Martini - Unanswered Questions - Dragon & Toast - Willow and the Light - Babylon GRAPHICS - Mammal supertree: Bininda-Emonds et al./NATURE - Tree of Life: tolweb.org (c) David R. Maddison Creative Commons Attribution License v3.0 - homologous skeleton: en.wikipedia.org - tardis: commons.wikimedia.org - Clip Art: Microsoft Offic Clip Art office.microsoft.com - all-silhouettes.com - all-silhouettes.com - all-silhouettes.com - Paleogeography maps: Ron Blakey, Colorado Plateau Geosystems, Inc. - synapsid skull: commons.wikimedia.org - dimetrodon: commons.wikimedia.org - caseid: commons.wikimedia.org - dimetrodon skull: RC Fox, The Project Gutenberg EBook of The Adductor Muscles of the Jaw In Some Primitive Reptiles. "This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at www.gutenberg.net" - skull roof: commons.wikimedia.org - fish skull: Lund, Richard, and Grogan, ED, 2005, Bear Gulch web site, www.sju.edu/research/bear_gulch, accessed 06 January 2012. - Frog ... 2012年02月14日再生回数 7442
	Mammals  Check us out at www.tutorvista.com Mammals (formally Mammalia) are a class of vertebrate, air-breathing animals whose females are characterized by the possession of mammary glands while both males and females are characterized by sweat glands, hair and/or fur, three middle ear bones used in hearing, and a neocortex region in the brain. Mammals are divided into three main infraclass taxa depending how they are born. These taxa are: monotremes, marsupials and placentals. Except for the five species of monotremes (which lay eggs), all mammal species give birth to live young. Most mammals also possess specialized teeth, and the largest group of mammals, the placentals, use a placenta during gestation. The mammalian brain regulates endothermic and circulatory systems, including a four-chambered heart. There are approximately 5400 species of mammals, distributed in about 1200 genera, 153 families, and 29 orders(though this varies by classification scheme). Mammals range in size from the 3040 millimeter (1- to 1.5-inch) Bumblebee Bat to the 33-meter (108-foot) Blue Whale. Mammals are divided into two subclasses: the Prototheria, which includes the oviparous monotremes, and the Theria, which includes the placentals and live-bearing marsupials. Most mammals, including the six largest orders, belong to the placental group. The three largest orders, in descending order, are Rodentia (mice, rats, porcupines, beavers, capybaras, and other gnawing mammals), Chiroptera (bats), and ... 2010年05月04日再生回数 3114
	Facts about mammals  Mammals (formally Mammalia) are a class of vertebrate, air-breathing animals whose females are characterized by the possession of mammary glands while both males and females are characterized by sweat glands, hair and or fur, three middle ear bones used in hearing, and a neocortex region in the brain. 2011年02月09日再生回数 5014