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It's not a fall, it's a lack of calcium, just give some calcium tablets, I wish your dog health and happiness.
After the child is impacted, first observe whether there is a change in consciousness, such as after the injury, he has been awake and has no headache or vomiting, indicating that the collision is mild and can continue to be observed for half an hour. If there is no problem in half an hour, you can rest assured. If the child wants to sleep, wakes up, sleeps again or cannot wake up at all, and has vomiting, headache, or even convulsions, he may have head damage and should be sent to the hospital for treatment immediately.
Maybe I broke my muscles and bones! Take it to the vet hospital! Or maybe scared!
If the dog didn't fall headfirst and can now walk normally, eat and drink normally, then it is not a big problem and can be observed first.
It should be that the screen cable is loose, take the screen frame apart and take a look, it is best to plug in the screen cable.