what essinetial functions do all animals carry out?
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As I live and breath, I surprise you asked. When you say essential to whom or for what is it essential?
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you should do your research paper on animals. They are always interesting.
19895
Well mammals hold their young in their wombs for a time (fetus development.....you should know you're a mammal) Females breast feed their young, they mother them, and basically show them the basic instincts they would need to surivie alone. But, all this depends on which mammal you are asking on-some mothers don't do all this with their young
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The basic functions of blood are: carry oxygen and nutrients to cells; remove waste from tissues; maintain body temperature by carrying heat to all parts; allow communication between organs (e.g. hormone and neurotransmitter transport)
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There are five main functions of a modern zoo.  These are: Conservation, Reproduction, Education, Research and Recreation.  Zoos have made valuable contributions to protecting the threatened wildlife of the earth. If it weren’t for zoos, many species would be extinct today.  Zoos give wild animals with NO chance a LAST chance.\n\nConservation:  \nZoos play a fundamental role in the conservation of endangered and threatened species all over the world.  Aside from breeding endangered animals, conservation consists of the rescue and preservation of existing animals.  In tropical rainforests alone, we lose 100 species every day, 4 species per hour, due to tropical deforestation.  At current rates, 5 – 10% of tropical forest species will become extinct every decade.\n\nWhile a large part of conservation is the breeding of animals, conservation begins with the other branch of preservation of animals, which is simply housing them.  Whether an animal was living in a particularly dangerous or volatile environment or whether its species had simply become so very low in numbers that human intervention became necessary, zoos have provided safe havens for endangered animals for many years. \n\nAll over the world, animal populations suffer as their natural habitats are destroyed or taken over.  Even though in many cases the destruction of an animal's habitat is a result of human progress, at times the survival of a species requires human assistance.  \n\nSome zoos even participate in conservation projects outside of their walls.  For example, many zoos sponsor efforts to preserve natural habitats of threatened or endangered species, such as the Asian bamboo forests that are home to the giant panda and the South American rain forests that are home to the lion tamarin, a species of small monkeys.  These and other animals might not survive without preservation efforts made by zoos across the country.   The overall goal of many zoos is to create and conserve healthy populations that can someday be reintroduced into the wild.\n\nReproduction: \nThe role of zoos in breeding animals, especially endangered species, is an important one.  Between 2,000 and 6,000 animal species will become extinct in the near future without human intervention.  Zoos focusing on captive breeding can call themselves conservation centers since they are helping in the fight to save endangered species.\n\nA well-managed zoo can breed animals faster than the animals might breed in an otherwise troubled area in the wild.  Captive breeding has saved such species as the European Bison, the Hawaiian Goose, and the Arabian Oryx, a type of antelope, from extinction.\n\nZoos around the world lend and trade animals with each other through the Species Survival Plan (SSP) in order to avoid inbreeding, which can lead to a weaker population, and promote a healthier, more diverse group of animals.  Many zoos also participate in the International Species Information System (ISIS), a computerized inventory of more than 250,000 animals housed in zoos throughout the world.  ISIS maintains ancestral records for the animals to help document the animals' genetic backgrounds.    \n\nEducation:\nAlthough few people visit a zoo with education in mind, most modern zoos believe their primary mission is to educate the public.  Zoos are able to alter human perceptions about animals because they are places where people can really get to know animals.  In modern zoos, people can see, hear and smell animals in recreations of their natural environments.\n\nThe broader goal of zoo education is not just to teach about animals, or even our relationship with animals, but also to teach about the entire natural world and our place in it.  Zoos offer guided tours, workshops for students, teachers and the general public, lectures and other activities to promote animal education.  Many also work with local colleges and offer apprenticeship programs to people interested in zoo related careers.\n\nPeopl
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They do have taste buds and have a definite preference of one type of food over another.  Also, animals have an excellent sense of smell and that is an important component of how food tastes and determining if one thing is better to eat than another.
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Just as a cheetah has a flexible spine that is like a spring so it can run fast, just as a whale has huge lungs that can hold vast amounts of air, we are adapted for our purpose. Those adaptations include opposable thumbs, upright walking, and most importantly, large brains capable of abstract thought and language.\n\nOur animal purposes are living in a rather unique ecological niche where we collaborate socially to develop technologies that allow us to form large sedentary communities.\n\nOur human purposes are empathy, compassion, and a charitable disposition. We are made able to learn what it means to walk a mile in another's shoes.\n\nOur divine purpose is to know that God is near, and to learn that we are able to become more than flesh.\n\nAnd our beatific purpose is to finally someday see God face to face, and to fall down and worship forever.
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Regardless of sweat, electrolytes are lost during hot periods in all birds and mammals-Actually, the loss can be greater in animals that dont sweat, depending on how they cool themselves.  Many animals stay cool in part by drinking cool water, which then dissolves salts in the body during kidney filtration, which is then secreted-leaving less salt, such as potassium, sodium, and chloride.  A minor reduction in these electrolytes will result in decreased energy, decreased growth and protein formation.  A severe reduction can result in neuronal and muscular dysfunction, including delerium, muscular spasms, and can result eventually in death.  For pigs and chickens, and other animals such as cows, protein production is the most important function-for meat, for embryonic development, for milk and egg production.  In fact, all animals bred for food are biological factories whose primary function is turning vegatable and other protein-poor food into protein-rich food.
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Nearly all animals undergo some form of sexual reproduction. Adults are diploid or occasionally polyploid. They have a few specialized reproductive cells, which undergo meiosis to produce smaller motile spermatozoa or larger non-motile ova. These fuse to form zygotes, which develop into new individuals.\n\nMany animals are also capable of asexual reproduction. This may take place through parthenogenesis, where fertile eggs are produced without mating, or in some cases through fragmentation.\n\nA zygote initially develops into a hollow sphere, called a blastula, which undergoes rearrangement and differentiation. In sponges, blastula larvae swim to a new location and develop into a new sponge. In most other groups, the blastula undergoes more complicated rearrangement. It first invaginates to form a gastrula with a digestive chamber, and two separate germ layers - an external ectoderm and an internal endoderm. In most cases, a mesoderm also develops between them. These germ layers then differentiate to form tissues and organs.\n\nAnimals grow by indirectly using the energy of sunlight. Plants use this energy to turn air into simple sugars using a process known as photosynthesis. These sugars are then used as the building blocks which allow the plant to grow. When animals eat these plants (or eat other animals which have eaten plants), the sugars produced by the plant are used by the animal. They are either used directly to help the animal grow, or broken down, releasing stored solar energy, and giving the animal the energy required for motion. This process is known as glycolysis.
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Pain is a fairly universal defense mechanism of life forms. It is nothing but the message (along neural cells) to the rest of the body (or at least the closest node in the nervous system) that something is wrong, so that the body can react by sending repair and defence agents. \n\nFish are vertebrates, and all vertebrates have a brain which coordinates most of their bodily functions. Mammals aren't that different from fish in this regard. Fish have more different sensory organs than mammals, all of which are coordinated in the brain.\n\nThere are also autonomous neural systems in vertebrate bodies. The intestines are a complex, self-regulating neural system with only little communication with the brain.\n\nIt is perfectly possible to make a fish "drunk" (i.e. reduce coordination of neural activity) by exposing it to chemicals. What levels of alcohol are required for it to act as a neurotoxic substance may differ from air-breathers, since the respiratory organs may be a better conductor for alcohol into the blood than the intestinal organs. Or in other words, think of inhalable alcohol.
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Warm-blooded animals control their body temperature by regulating their metabolic rates (e.g. increasing their metabolic rate as the surrounding temperature begins to decrease).  Warm-blooded animals warm themselves by digesting food.\n\nThere are three types of warm blooded creatures:\n\n1 Endothermy is the ability of some creatures to control their body temperatures through internal means such as muscle shivering, fat burning, and panting (Greek: endo = "within," therm = "heat"). \n\n2 Homeothermy is the kind of thermoregulation used by those creatures that maintain a stable internal body temperature regardless of external influence. This temperature is often higher than the immediate environment (Greek: homoios = "same, identical," therm = "heat"). \n\n3 Tachymetabolism is the kind of thermoregulation used by creatures that maintain a high resting metabolism (Greek: tachy = "fast, swift," metabol = "to change"). Tachymetabolic creatures are, essentially, "on" all the time. Though their resting metabolism is still many times slower than their active metabolism, the difference is often not as large as that seen in bradymetabolic creatures. Tachymetabolic creatures have a harder time dealing with a scarcity of food.
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major function of the body such as controlling the rest
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(1)\n- Animals are heterotrophs, i.e. they need to feed of other living things\n- Plants are (most plants are) autotrophs, i.e. they can produce their own food from the sun\n\n(2)\n- plants convert carbon dioxide to oxygen (and sugar) during the day...\n- animals need oxygen, but can't produce it themselves\n\n(3)\n- plants decrease the level of carbon dioxide in the air (which would otherwise make breathing hard for animals).
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Because we have opposable thumbs and use our hands to accomplish things.  Also, we, unlike other animals, have a desire to use our intelligent for our own well being.  Animals just act on instinct.
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Land animals can walk on land and breath oxygen. With the exseption of dolphins and whales the others cant breath oxengen.
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OMNIVORES \nEats live prey and plants \nOSTEOMALACIA \nSoftening of the bones \nOVIPAROUS \nReproduces by laying eggs\n\nOr...\nOdd
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wouldn't teh functions of the systems be the same for every organisms.  for example the respiratory system is for breathing in both cows and humans and probably for the toad as well.  the circulatory system is for circulating blood in every organsim.  the excretory system extrects toxins and metabolic wastes and the nervous system allows for cordiation of muscles and autonomic behaviors as well as cognitive thinking.  \n\nhowever the real functions of all these organs is SURVIVAL.  SURVIVAL is the driving force of life and you are kidding yourself if you think otherwise.