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1.what is the name of the animal?
2.when did people begin to use this animal?
3.How(what for) did people use this animal?
4.What has changed in the course of time?
5.How is the animal used now?

1. Dog.2. About 18,800–32,100 years ago.3. Dogs help people to hunt and to gather livestock. Also they protect people and their homes.4. People still use dogs for this needs.5. But also nowadays dogs are our companions and friends. There're dogs which help or rehabilitate disabled people. Dogs are can be used in military too.