Dogs are natural scavengers and were bound to hang out where humans lived, receiving scraps. The friendly and more useful dogs were kept around, while the meaner animals were chased away or killed, thus allowing for a natural breeding of dogs with better and more useful traits to humans. Humans supplied dogs with food and scraps and dogs in turn kept out vermin and other scavengers, as well as alerting people to danger due to their sharp senses.
Another interesting aspect of this history is that wolf remains have been found in association with human remains as far back as 400,000 years. Though, it's important to remember that dogs descended from ancestral wolves, and not the modern wolves around today. Modern wolves share the same ancestors and because of this, dogs and wolves are able to interbreed.
Research today indicates that domestication can happen quickly, within one or two human generations with controlled selective breeding.
So it's another delayed update. Thanks for all the encouragement, it may be once or twice a week, but the updates will keep coming.
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