A dog who is not spayed and suddenly stops eating, drinks far more than usual, and seems flat, tired, and sleeping more than usual may be in serious trouble. That cluster points to pyometra, a uterine infection that usually shows up in adult females a few weeks after a heat cycle. It is an emergency, and a dog can slide from a little off to critically ill in a single day.
The hard part is that pyometra does not always announce itself. Some dogs leak a discharge and some do not. The closed form keeps the infection sealed inside the uterus, so there may be nothing to see. That is why the sudden thirst and the lost appetite matter so much. If you notice them, call your vet right away instead of waiting for a fever to show up. We have walked through when to wait and when to call the vet for symptoms like diarrhea, and with pyometra the answer is always to call.
Treatment is surgery, usually a spay, which removes the source of the infection and keeps it from coming back. A report from dvm360 found that outpatient surgery for pyometra leads to good outcomes, and it also dug into what owners actually pay. In a 2022 survey, median costs at private practices ran about $1,000 for a medium-sized dog, while community clinics reported closer to $200. Emergency hospitals sit at the top of that range, with some owners reporting quotes from $6,000 to $10,000.
What this means for your dog: know the signs now, act fast if they appear, and ask where the surgery can be done. Community clinics handle pyometra cases, and some private practices already refer them there when money is tight. Because an unspayed female carries this risk cycle after cycle, it is also worth asking your vet whether spaying is the right call for your dog.