horse : a large solid-hoofed herbivorous ungulate mammal (Equus caballus, family Equidae, the horse family) domesticated since prehistoric times and used as a beast of burden, a draft animal, or for riding — Webster
Horse is one of two extant subspecies of Equus ferus. It is an odd-toed ungulate mammal belonging to the taxonomic family Equidae. The horse has evolved over the past 45 to 55 million years from a small multi-toed creature, Eohippus, into the large, single-toed animal of today. Humans began domesticating horses around 4000 BC, and their domestication is believed to have been widespread by 3000 BC. Horses in the subspecies caballus are domesticated, although some domesticated populations live in the wild as feral horses. These feral populations are not true wild horses, as this term is used to describe horses that have never been domesticated, such as the endangered Przewalski’s horse, a separate subspecies, and the only remaining true wild horse. There is an extensive, specialized vocabulary used to describe equine-related concepts, covering everything from anatomy to life stages, size, colors, markings, breeds, locomotion, and behavior.
Horses’ anatomy enables them to make use of speed to escape predators and they have a well-developed sense of balance and a strong fight-or-flight response. Related to this need to flee from predators in the wild is an unusual trait: horses are able to sleep both standing up and lying down, with younger horses tending to sleep significantly more than adults. Female horses, called mares, carry their young for approximately 11 months, and a young horse, called a foal, can stand and run shortly following birth. Most domesticated horses begin training under saddle or in harness between the ages of two and four. They reach full adult development by age five, and have an average lifespan of between 25 and 30 years.
Horse breeds are loosely divided into three categories based on general temperament: spirited “hot bloods” with speed and endurance; “cold bloods”, such as draft horses and some ponies, suitable for slow, heavy work; and “warmbloods”, developed from crosses between hot bloods and cold bloods, often focusing on creating breeds for specific riding purposes, particularly in Europe. There are more than 300 breeds of horse in the world today, developed for many different uses. — Wikipedia
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Horses News -- ScienceDaily Equine News. All about horses including the latest in horse cloning, race horse physiology and horse health.
- Vaccine for rare but deadly mosquito-borne...on May 12, 2022 at 4:19 pm
A vaccine for eastern equine encephalitis virus (EEEV), western equine encephalitis virus (WEEV), and Venezuelan equine encephalitis virus (VEEV) was found to be safe, well-tolerated and induced a neutralizing antibody response in adult volunteers, according to newly published results from a Phase 1 clinical trial.
- Livestock and dairying led to dramatic social...on May 11, 2022 at 6:23 pm
The movement of herders and livestock into the eastern steppe is of great interest to researchers, but few scholars have linked the introduction of herds and horses to the rise of complex societies.
- Florida's state shell at higher risk of...on April 6, 2022 at 8:05 pm
Unregulated commercial harvesting and recreational live collection are pushing Florida horse conch populations closer to collapse.
- Virology: Equine hepatitis viruses and hepatitis Con March 2, 2022 at 4:06 pm
As of today, there is no vaccine against hepatitis C. To improve the search for it, researchers are looking for a so-called surrogate model: an animal that can also suffer from viral hepatitis and whose course of infection allows conclusions about the behavior of the hepatitis C virus in humans. They found what they were looking for in the horse.
- Discovery of new Hendra virus variant a lesson in...on February 24, 2022 at 4:26 pm
New research has uncovered an unrecognized variant of the Hendra virus, prompting re-evaluation of spillover risk from horses and their carers to other humans.
Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.
- Climate change reveals unique artifacts in...on May 19, 2022 at 1:37 pm
One day more than 3,000 years ago, someone lost a shoe at the place we today call Langfonne in the Jotunheimen mountains. The shoe is 28 cm long, which roughly corresponds to a modern size 36 or 37. The owner probably considered the shoe to be lost for good, but on 17 September 2007 it was found again—virtually intact.
- Trees aren't a climate change cure-all: Two new...on May 13, 2022 at 3:13 pm
When people talk about ways to slow climate change, they often mention trees, and for good reason. Forests take up a large amount of the planet-warming carbon dioxide that people put into the atmosphere when they burn fossil fuels. But will trees keep up that pace as global temperatures rise? With companies increasingly investing in forests as offsets, saying it cancels out their continuing greenhouse gas emissions, that's a multibillion-dollar question.
- No sea serpents, mobsters but Tahoe trash divers...on May 13, 2022 at 8:28 am
They found no trace of a mythical sea monster, no sign of mobsters in concrete shoes or long-lost treasure chests.
- Bracing for her future: Human medicine rescues...on May 12, 2022 at 9:39 pm
Over the past three decades Ara Mirzaian has fitted braces for everyone from Paralympians to children with scoliosis. But Msituni was a patient like none other—a newborn giraffe.
- What we're still learning about how trees growon May 12, 2022 at 6:00 pm
What will happen to the world's forests in a warming world? Will increased atmospheric carbon dioxide help trees grow? Or will extremes in temperature and precipitation hold growth back? That all depends on whether tree growth is more limited by the amount of photosynthesis or by the environmental conditions that affect tree cell growth—a fundamental question in tree biology, and one for which the answer wasn't well understood, until now.
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