Reasons for lambs calling for unknown reasons:

1. Estrus: Sheep barking is not intermittent and runs around and stops after the end of estrus.

2. Rheumatism: Sheep bark due to joint or body pain, but they do not always bark indirectly.

3. The temperature is too low: When the heat preservation work is not done properly, the sheep will only bleat because of the cold.

4. Physical trauma or rheumatism: causing the sheep to have severe pain all over the body or in part of the body, causing the sheep to cry all the time.

5. The daily feed amount is insufficient: the sheep feel hungry and make noises. Generally, this situation will not happen again after sufficient feed is fed.

6. Problems with the gastrointestinal tract and other digestive tracts lead to indigestion in sheep: constipation, stomachache, and constant screaming.

7. The lamb cannot find the ewe: or the ewe cannot find the lamb, which may cause the sheep to bleat non-stop.

8. Huge changes in the environment: or being frightened will cause the sheep to bark non-stop.

9. Disease: When the lamb is feeling unwell, it will express its pain by chirping. At this time, it can be treated with appropriate medications, or it can be sent to a pet hospital for systemic treatment and then the situation can be observed.