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Working dogs are animals that have a job. These dogs get special training (训练) to help and protect people. They make people's life easier and safer. Some dogs work with police officers and . They work together to find criminals (罪犯). When there is an accident, they also search and people. Sometimes their work is very and some dogs even lose their lives. Guide dogs work as eyes for the people and as ears for people with hearing problems. These working dogs are also very smart. They have learnt to think for themselves and meet people's different needs.