What does the red pendant under the cock's mouth do?

Play a role in keeping warm.

1, the red pendant under the cock's mouth plays a role in keeping warm and improving sexual desire.

2. Rooster falling can also help chickens naturally form a sort among males, which is helpful to maintain the order of rooster nest and reduce the conflict between chickens.

I am the workshop manager. When injection molding products are changed to injection molding machines of different manufacturers, the parameters are always different and will not correspond to the para

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I had double vocal nodules when I was very young, and now I am a boy of 15 years old. How can double vocal nodules recover completely except for not shouting loudly?

There were three abscesses, a lump in the breast and hyperplasia of mammary glands for two and a half months. ...

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