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A police dog, also known as a K-9 (portmanteau of canine), [1] is a dog that is trained to assist police and other law enforcement officers. Their duties may include searching for drugs and explosives , locating missing people , finding crime scene evidence, protecting officers and other people, and attacking suspects who flee from officers.
Dog breeding is the practice of mating selected dogs with the intention of maintaining or producing specific qualities and characteristics. When dogs reproduce without such human intervention, their offspring's characteristics are determined by natural selection , while "dog breeding" refers specifically to the artificial selection of dogs, in ...
A likely mechanism for avoidance of inbreeding is independent dispersal trajectories from the natal pack. Many of the young wolves spend time alone or in small non-breeding packs composed of unrelated individuals. The union of two unrelated individuals in a new home range is the predominant pattern of breeding pair formation. [34]
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A common breeding practice for pet dogs is to mate them between close relatives (e.g., between half- and full-siblings). [97] In a study of seven dog breeds (the Bernese Mountain Dog , Basset Hound , Cairn Terrier , Brittany , German Shepherd Dog , Leonberger , and West Highland White Terrier ), it was found that inbreeding decreases litter ...
Captive breeding, also known as captive propagation, is the process of keeping plants or animals in controlled environments, such as wildlife reserves, ...
Pit bull is an umbrella term for several types of dog believed to have descended from bull and terriers.In the United States, the term is usually considered to include the American Pit Bull Terrier, American Staffordshire Terrier, American Bully, Staffordshire Bull Terrier, and sometimes the American Bulldog, along with any crossbred dog that shares certain physical characteristics with these ...
Sows used for breeding in 6.6 ft × 2.0 ft (2 m × 60 cm) gestation crates. Between 60 and 70 percent of sows are kept in crates during pregnancy in the United States. [13] Each pregnancy lasts for three months, three weeks, and three days [citation needed]. Sows will have an average of 2.5 litters every year for two or three years, most of ...