People in Belgium train rats(老鼠) to look for people in danger.

Rats are small. They can go to many places easily. They also have a very good sense of smell. People can train rats like dogs.

Rats are interested in everything. They like to search through places. People in Belgium teach rats in a place looking like a real disaster zone(灾区).

The rats wear a special bag. A video camera is in it. A device(设备) is in it, too. A person can talk to rescuers(救援者) with the device.

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