"Mammal" Essays and Research Papers

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Mammary glands: feature for which mammals are named-produce milk to nourish the young. Having hair, ability to nourish their young with milk, all breathe air, have four chambered hearts, and are endotherms. The first true mammals appeared during the late Triassic period, about 220 million years ago. Mammals are descended from ancient reptiles. * * Form and Function in Mammals * * Body Temperature Control * High metabolic rate, helps generate body heat. External body hair...

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Marine Mammals

ethical debate over marine mammals in captivity there are many conflicting views. The public theme park industries advocate that marine mammal exhibits provide an important role in educating, entertaining, and conservation; they see nothing wrong with captivity. An increasing number of scientists counter this view and believe that animals should flourish naturally and are too intelligent to be held captive. Animal protection groups also have taken notice that these mammals in captivity develop severe...

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Evolution of Mammals: Cat Family

The felids are a rapidly evolving family of mammals that share a common ancestor only 10–15 million years ago,[26] and include, in addition to the domestic cat, lions, tigers, cougars, and many others. Within this family, domestic cats (Felis catus) are part of the genus Felis, which is a group of small cats containing approximately seven species (depending upon classification scheme).[1][27] Members of the genus are found worldwide and include the jungle cat (Felis chaus) of southeast Asia, European...

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From Land to Sea: How Could a Land Mammal Turn Into a Whale?

From Land To Sea: How could a Land Mammal turn into a Whale? by Tamara Schupp San Diego State University 04/03/06 H100/M4 Whale Evolution 2 From Land to Sea: How could a Land Mammal turn into a Whale? The evolution of whales has long been a mystery to researchers. A whale has so many derived characteristics of a land mammal, such as a large brain, it breathes air, gives birth to live young and is warm blooded, and yet it still manages to live in the sea. Evolutionists believe that...

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Endangered Mammal: Maned Three-Toed Sloth (Bradypus Torquatus)

Endangered mammal The maned-three-toed sloth, also known as the maned sloth is the rarest of the five sloth species and is endemic to Brazil (Macdonald, 2001) . Its name derives from the black mane of hairs, which runs down the back of its neck an over the shoulders. Like other sloths are characterized by their short bodies, long limbs and stumpy tails (Emmons, 1990) . Unusual is its proportions of body parts, with very small eyes, small ears, and a tail that is hidden in the fur , along with a...

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The Marine Mammal Protection Act

The Marine Mammal Protection Act Abstract This paper includes information a particular environmental law. Specifically, the Marine Mammal Protection Act is discussed along with the history and background of this particular environmental law. In addition, the reasoning behind its existence will be elaborately deliberated. The Marine Mammal Protection Act The Marine Mammal Protection Act was established and signed in 1972. According to Ray and Potter (2011), this bill was “passed, despite...

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classification of vertebrates

in which all vertebrates are classified? • 2. What is the phylum in which all vertebrates are classified? • 3. What is the subphylum in which all vertebrates are classified? Why am I a vertebrate, and how am I like fish, amphibians, birds, and mammals? BEARDED DRAGON ALL VERTEBRATES BELONG TO THESE CATEGORIES: • KINGDOM ANIMALIA • PHYLUM CHORDATA • SUBPHYLUM VERTEBRATA TALKING IGUANA • • • • • • As a green iguana, let me tell you all the characteristics that Vertebrates share. They are:...

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The Words of the Gods

both vertebrateand invertebrate, but males do not bear a penis in every animal species, and in those species in which the male does bear a so-called penis, the penes in the various species are not necessarily homologous. For example, the penis of a mammal is at most analogous to the penis of a male insect or barnacle. The term penis applies to many reproductiveintromittent organs, but not to all; for example the intromittent organ of most cephalopodais the hectocotylus, a specialised arm, and male...

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Compared to Eutherian (placental) Mammals Follow the directions for each activity. Answer the essay questions completely using thoughtful ideas, the course text, and outside reference sources, where applicable. Proofread answers for potential writing errors. Part A. Metatherian Mammals ________________________________________ Part A Question1) What are metatherian mammals? What are distinguishing characteristics of metatherian mammals? Metatherian mammals are marsupials. Distinguishing characteristics...

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Animal Kingdom

Kingdom Animalia: Mammals, Insects, Birds, and Echinoderms [YOUR NAME HERE] [CLASS SUBJECT HERE] [PROFESSOR’S NAME HERE] June 1, 2008 With the omission of both prokaryotes and protists, Kingdom Animalia generally contains all sorts of animal species. It is estimated that anywhere from nine to ten million exist on Earth – the exact number is not precisely known. Kingdom Animalia includes the following species: mammals, insects, birds, echinoderms, and etcetera. This...

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