McGreal, Chris (29 October 2003). "Israelis may put pigs on guard duty". The Guardian. ISSN 0261-3077. Archived from the original on 2023-03-02 . Retrieved 2023-03-04. Detection rats such as those trained by APOPO can also be taught to identify diseases, especially pulmonary tuberculosis. [25] Horses are able to sleep both standing up and lying down. In an adaptation from life in the wild, horses are able to enter light sleep by using a " stay apparatus" in their legs, allowing them to doze without collapsing. [116] Horses sleep better when in groups because some animals will sleep while others stand guard to watch for predators. A horse kept alone will not sleep well because its instincts are to keep a constant eye out for danger. [117]

Orlando, Ludovic; Outram, Alan K.; Librado, Pablo; Willerslev, Eske; Zaibert, Viktor; Merz, Ilja; Merz, Victor; Wallner, Barbara; Ludwig, Arne (6 April 2018). "Ancient genomes revisit the ancestry of domestic and Przewalski's horses". Science. 360 (6384): 111–114. Bibcode: 2018Sci...360..111G. doi: 10.1126/science.aao3297. ISSN 0036-8075. PMID 29472442. A working animal is an animal, usually domesticated, that is kept by humans and trained to perform tasks instead of being slaughtered to harvest animal products. Some are used for their physical strength (e.g. oxen and draft horses) or for transportation (e.g. riding horses and camels), while others are service animals trained to execute certain specialized tasks (e.g. hunting and guide dogs, messenger pigeons, and fishing cormorants). They may also be used for milking or herding. Some, at the end of their working lives, may also be used for meat or leather. Befuddling Birth: The Case of the Mule's Foal". NPR.org. National Public Radio. Archived from the original on 2008-12-06 . Retrieved 2008-08-16. Vila, C.; etal. (2001). "Widespread Origins of Domestic Horse Lineages" (PDF). Science. 291 (5503): 474–477. Bibcode: 2001Sci...291..474V. doi: 10.1126/science.291.5503.474. PMID 11161199. Archived from the original (PDF) on 2012-10-13 . Retrieved 2009-03-17. A 2021 genetic study suggested that most modern domestic horses descend from the lower Volga-Don region. Ancient horse genomes indicate that these populations influenced almost all local populations as they expanded rapidly throughout Eurasia, beginning about 4,200 years ago. It also shows that certain adaptations were strongly selected due to riding, and that equestrian material culture, including Sintashta spoke-wheeled chariots spread with the horse itself. [158] [159]

Fields must be free from dangerous objects and poisonous plants and weeds. If this is not possible, horses must be fenced away. Annual pasture management plans must be in place for fields. Height is not the sole criterion for distinguishing horses from ponies. Breed registries for horses that typically produce individuals both under and over 14.2hands (58inches, 147cm) consider all animals of that breed to be horses regardless of their height. [35] Conversely, some pony breeds may have features in common with horses, and individual animals may occasionally mature at over 14.2hands (58inches, 147cm), but are still considered to be ponies. [36]

War elephants were trained for battle in ancient times and are still used for military transport today. A rider should never ride any horse which they are unable to control safely. Riding in an enclosed and familiar environment is beneficial for schooling and to enable a new horse and rider to become accustomed to one another. On the road A handler should be aware of the safest position to adopt for the task being carried out. Standing directly behind or in front of a horse can increase the risk of being injured should the horse strike out with a limb. When holding a horse that is being clipped or treated by a veterinary surgeon or farrier, the handler should stand on the same side as the attendant. Jenkins, Austin (22 July 2009). "KPLU: Dogs Used to Sniff Out Cell Phones in NW Prisons". KPLU 88.5. Archived from the original on 2012-09-19 . Retrieved 2010-11-11.Timber must be of good quality and well-kept. Any damaged areas must be sealed or over clad. Wood must be smooth, proofed and maintained to keep it waterproof.