How to tell if animals can make it rain?

As follows:

1. Swallows flying low are a precursor to rain.

2. Sparrows don’t fly far, they keep flying, sometimes flying high, sometimes flying fast, and it will rain in 30 minutes to an hour.

3. The cattle and sheep grazing in the wild will not go home even after it gets late. They keep their heads down and eat hard. It will rain the next day.

4. A small frog is a small animal that uses its vocal cords to sing. It makes sounds by opening and closing two bubbles on both sides of its brain. If it is a sunny day, because the temperature is moderate and the air pressure is normal, the frog's call is melodious and rhythmic; if when the heavy rain is about to come, the temperature rises and the temperature increases, forcing the vocal cords of the little frog to make sounds, and the little frog will Screaming without regularity.

Explanation of related content:

In the countryside, there used to be no TV sets in the village, and the farmers had no idea what the weather would be like tomorrow. After a long period of life experience, smart farmers A series of weather change patterns are summarized based on changes in nature or reactions of small animals. These experiences are all the crystallization of the wisdom of our predecessors.

Dragonflies are also one of the little experts in weather forecasting. According to the editor's observation, there are always a lot of dragonflies flying low before it rains. There is a proverb in rural areas that "dragonflies fly low." , Bring a raincoat when you go out."