Animal genetic resources for food and agriculture of animal genetic resources includes diversity at species, breed and within-breed level. Known are currently 8,800 different breeds of birds and mammals within 38 species used for food and agriculture. The main animal species used for food and agriculture production are cattle, sheep, goats, chickens and pigs. In the livestock world, these species are often referred to as "the big five". Some less-utilized species include the dromedary, donkey, bactrian camel, buffalo, guinea pig, horse, rabbit, yak, goose, duck, ostrich,partridge, pheasant, pigeon, and turkey. The history of animal genetic resources begins about 12,000 to 14,000 years ago. The domestication of major
Animal rescue group breeds, rescue groups may specialize in specific breeds or groups of breeds. For example, there might be local Labrador Retriever rescue groups, hunting dog rescue groups, large-dog rescue groups, as well as general dog rescue groups. Animal rescue organizations have also been created to rescue and rehabilitate wild animals, such as lions, tigers, and cheetahs; a job which is normally shared or backed by zoos and other conservation charities. These animals are normally released back into the wild where possible, otherwise they will remain in captivity and may be used in breeding for an endangered species. Widely recognized as an