Cow, Sheep, Pig Articles

• Early Humans
  Human Evolution
  Origin of Life
  Evolution
  Nature
  Evolutionary Biology
   
  

  Timeline of evolution

  This timeline of the evolution of life outlines the major events in the development of life on the planet Earth. Dates given are estimates based on scientific evidence. In biology, evolution is the ... > more
• Health Policy
  Virology
  Sports Medicine
  Viruses
  Infectious Diseases
  Biology
   
  

  Biological warfare

  Biological warfare, also known as germ warfare, is the use of any organism (bacteria, virus or other disease-causing organism) or toxin found in nature, as a weapon of ... > more
• Endangered Animals
  Animals
  Nature
  Mammals
  Trees
  Mating and Breeding
   
  

  Koala

  The Koala (Phascolarctos cinereus) is a thickset arboreal marsupial herbivore native to Australia, and the only extant representative of the family, Phascolarctidae. Koalas live almost entirely on ... > more
• Organic
  Soil Types
  Botany
  Agriculture and Food
  Endangered Plants
  Sustainability
   

  Organic lawn management

  Organic lawn management is the practice of establishing and caring for a garden lawn without the use of chemical inputs such as pesticides or artificial fertilisers. The garden lawn is a place where ... > more
• Healthy Aging
  Heart Disease
  Diseases and Conditions
  Sports Medicine
  Chronic Illness
  Pests and Parasites
   
  

  Chagas disease

  Chagas disease is a human tropical parasitic disease which occurs in the Americas, particularly in South America. Its pathogenic agent is a flagellate protozoan named Trypanosoma cruzi, which is ... > more
• Fish
  Marine Biology
  New Species
  Sea Life
  Invasive Species
  Frogs and Reptiles
   
  

  Stingray

  Dasyatidae is a family of rays, cartilaginous marine fishes, related to skates and sharks. Some adult rays may be no larger than a human palm, while other species, like the short-tail stingray, may ... > more
• Dinosaurs
  Paleontology
  Extinction
  Tyrannosaurus Rex
  Early Birds
  Fossils
   
  

  Dinosaur

  Dinosaurs were vertebrate animals that dominated terrestrial ecosystems for over 160 million years, first appearing approximately 230 million years ago. At the end of the Cretaceous Period, 65 ... > more
• Agriculture and Food
  Sports Medicine
  Healthy Aging
  Attention Deficit Disorder
  Nutrition
  Endangered Plants
   
  

  Rice

  Rice refers to two species of grass, native to tropical and subtropical southeastern Asia and to Africa, which together provide more than one fifth of the calories consumed by humans. Rice is an ... > more
• Dogs
  Veterinary Medicine
  Behavioral Science
  Spiders and Ticks
  Animals
  Mammals
   
  

  Obedience training

  Obedience training involves training an animal, most often a dog, to obey basic control commands such as sit, down, and heel. There are almost as many methods of training as there are trainers, but ... > more
• Horses
  Veterinary Medicine
  Mammals
  Animals
  Nature
  Dogs
   
  

  Appaloosa

  The Appaloosa is a horse breed, in which the horse has one of several distinct patterns of spots. This horse became associated with the Nez Perce Indian tribe, who were known as notable horse ... > more

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