The sudden drooping of a dog's tail may be due to the following three reasons: 1. Caused by fear. Usually dogs will droop their tails when they are scared, and when they are extremely scared, they will tuck their tails into their buttocks; 2. Tail Injury may be caused by the dog accidentally injuring its tail while playing; 3. A sign of sadness. The dog's tail is a way of expressing emotions. If the tail suddenly droops, it means that the dog is unhappy.

Tips:

Under normal circumstances, a dog’s tail is turned up. Especially after the owner returns home from a trip, the dog will be very excited. Therefore, the tail is tilted up, but if the dog droops its tail, it means that the dog is sad and unhappy.