What is the animal that watches the weather forecast?

If pigs pull weeds in the morning, it will rain after 36 hours; Picking grass after noon indicates rain in 20 hours. As night falls, the sheep don't want to go home. They just bow their heads and eat grass. They not only eat for a long time, but also don't like walking, which indicates that it will rain tomorrow. As dusk approaches, the chickens refuse to put on the shelves, walking around the ground, foraging and shaking their feathers from time to time, which indicates that it will rain soon.

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