Animals are a major group of organisms, classified as the kingdomAnimalia or Metazoa. In general they are multicellular, capable of locomotion, responsive to their environment, and feed by consuming other organisms. Their body plan becomes fixed as they develop, usually early on in their development as embryos, although some undergo a process of metamorphosis later on.
The word "animal" comes from the Latin word animal, of which animalia is the plural, and ultimately from anima, meaning vital breath or soul.
Characteristics
Animals have several characteristics that set them apart from other living things. Animals are eukaryotic and usually multicellular (although see Myxozoa), which separates them from bacteria and most protists. They are heterotrophic, generally digesting food in an internal chamber, which separates them from plants and algae. They are also distinguished from plants, algae, and fungi by lacking cell walls.
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New Facilities Strengthen Treatment Options Thu, 17 Jul 2008 15:56:36 -0700 <img class="thumb" src="http://oregonstate.edu/enewsletter/images/horse.jpg" alt="Stacy Semevolos" title="OSU's Stacy Semevolos" />When a horse develops an infection, its owners usually turn to a rural veterinarian. But when lameness strikes an Oregon Appaloosa or quarterhorse, rural vets increasingly refer their patients to OSU's College of Veterinary Medicine for treatment. House Calls to the Hoopa Wed, 18 Jun 2008 15:02:46 -0700 On-the-job training for vet students, including several from OSU, benefits the Hoopa Valley Indian Reservation northeast of Eureka, Calif. The Vet Gazette Fri, 16 May 2008 00:00:00 -0700 <img class="thumb" src="http://oregonstate.edu/enewsletter/images/murphymongolia.jpg" alt="Photo of CVM Student Shanna Murphy title="Travels to Mongolia" />Check out upcoming events and recent stories from the College of Veterinary Medicine. Pet Day 2008 Fri, 18 Apr 2008 00:00:00 -0700 <img class="thumb" src="http://oregonstate.edu/enewsletter/images/petday.jpg" alt="Photo of a child with duck" title="OSU's 21st Annual Pet Day on May 3" />Celebrate the human-animal bond on Pet Day. Tour Magruder Hall and the newly-expanded large animal facilities and learn what it takes to become a veterinarian. Also, watch dog agility demonstrations, visit the petting zoo and enter your dog into the Frisbee contest! Leashed pets are welcome. CVM Professor and Student Travel to 2008 Iditarod to Perform Study Tue, 18 Mar 2008 00:00:00 -0700 Dr. Erica McKenzie and first year veterinary student Jocelyn Riehl attended the 36th running of the Iditarod Trail Sled Dog race, which commenced in Anchorage, Alaska on March 1. <img class="thumb" src="http://oregonstate.edu/enewsletter/images/huskies.jpg" alt="Photo of Two Huskies at the Iditarod" title="Two Huskies at the Iditarod" /> CVM Students Visit the Centers for Disease Control in Atlanta Tue, 18 Mar 2008 00:00:00 -0700 In January OSU veterinary students Liz James, Jeni Gallagher and Allison Miller flew to the Centers for Disease Control and Prevention in Georgia to attend a conference on the role of veterinarians in public health.
American Veterinary Medical Law Association. - National association of attorneys, veterinarians, and other individuals and organizations with an interest in veterinary medical law and how it pertains to the veterinary profession and allied fields.
Animal Health, Emerging Animal Disease (AHEAD) - Federation of American Scientists' project for proactive surveillance of zoonoses and other animal diseases. Includes information on rabies, West Nile fever, ehrlichiosis, equine encephalitis, anthrax, Pfiesteria, mad cow disease, deformed frogs, and diseases of both wildlife and farm animals.
Meta Description: [ The Federation of American Scientists's Animal Health and Emerging Diseases project is the Animal Division of the Program to Monitor Emerging Diseases (ProMed) for proactive sureillance of diseases. ]
Bayer Animal Health - International Animal Health Portal - Provides information about companion and farm animals. Organized in four sections, gives advice on how to prevent and to treat diseases.
Meta Description: [ . The international Bayer Animal Health Portal provides all information you need about your companion or farm animals. This homepage advises you how to prevent and to treat diseases with our help. ]
Cat HEalth & Dog Health - ThePetCheckup kit helps you know when your animal friend needs veterinary
attention between routine visits.
Meta Description: [ ThePetCheckup kit helps you know when your animal friend needs veterinary attention between routine visits. And, as you would expect, medical treatment at an early stage is less painful, less expensive, and more effective. Early detection for feline & canine diabetes, kidney infection, etc. ]
Exotic Pet Vet.Net - Committed to providing current information for owners, breeders, and veterinarians, written by a Board Certified Avian Specialist veterinarian and exotic animal consultant.
Meta Description: [ Medical information about primates, small animals, birds, reptiles, amphibians, & fish, written by a board certified avian veterinarian with 25 years experience with exotic species. ]
Morris Animal Foundation - Improves the health and well-being of companion animals and wildlife by funding humane health studies and disseminating information about these studies.
VetRef.net - Resources for owners and veterinarians; includes articles on pet health, whole foods diets, electron microscopy, anti-roaming dog downloads, and links to other sites of veterinary interest.
Meta Description: [ VetRef.Net is a collection of articles and resources for pet owners, research projects, reference materials, and links. Some of these materials have been used by SWAT in Austin , Texas for the development of emergency K-9 protocols and by Murdoch Veterinary University in Perth, Australia for teac... ]