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street dog
Street dogs, known in scientific literature as free-ranging urban dogs or urban free-ranging dogs, are unconfined dogs that live in cities. They live virtually wherever cities exist and the local human population allows, especially in the developing world and the former second world. Street dogs may be stray dogs, pets which have strayed from or are allowed freedom by their owners, or may be feral animals that have never been owned. Street dogs may be stray purebreds, true mixed-breed dogs, or unbred landraces such as the Indian pariah dog. Street dog overpopulation can cause problems for the societies in which they live, so campaigns to spay and neuter them are sometimes implemented. They tend to differ from rural free-ranging dogs in their skill sets, socialization, and ecological effects.
==Origin==
In much of Africa and Eurasia, most free-roaming dogs are not true mixed-breed dogs, a literal mix of one or more purebred dogs. Instead, they are descended from the same original landrace of dogs from which purebred dogs were originally created and which have existed since humans started living in settlements. They have always been scavengers living on human cast-offs and handouts. In addition to scavenging, individual street dogs are widely kept as uncontained pets by urban slum households.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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