Segera berikan perawatan untuk kembung. Perhatikan kemungkinan dehidrasi. Ketahui kapan saatnya Anda perlu menghubungi dokter hewan.

Given the above summary, write a detailed text in English for it.
If your dog vomits, but nothing comes up your dog may have a serious and life-threatening condition called bloat. Symptoms include repeated attempts to vomit without actually producing vomit and drooling strings of saliva (because he can't swallow it). Your dog needs emergency medical treatment for bloat, since this serious condition can kill within hours if it's not treated. Once your dog vomits, he may feel nauseous which prevents him from wanting to drink. This, along with vomiting up fluid, can cause dehydration if the amount of fluid he loses is greater than the amount of fluid he's taking in. If your dog is showing early signs of dehydration, give him an electrolyte drink mixed with water every few hours for a day. If the dehydration doesn't improve, get medical attention. Early signs of dehydration include:  Excessive panting Dry mouth, gums, or nose Visible lethargy (fatigue) Dry or sunken eyes Lack of skin elasticity (the skin won't fall back into place immediately if you pinch a little and release it) Weakness in the hind end (a later stage of dehydration) Unsteadiness when walking (a later stage of dehydration) If the vomiting is simple and straightforward, such as after scavenging garbage, then most times you can nurse the dog better at home by offering fluids, and withholding food. However, you should always watch for signs that your dog needs immediate medical attention. These include:  Retching with nothing coming up Vomiting once or twice with your dog still seeming dull and depressed Vomiting for more than 4 hours or not being able to keep water down Vomiting blood which could indicate a serious ulcer in the stomach wall