The signs of parvo in a dog are vomiting, loss of appetite and lethargy.
As the parvo disease progresses in the dog, the dog will start experiencing other symptoms such as severe and bloody diarrhea, fever and dehydration.
Some other potential symptoms of parvo in dogs include rapid heart rate, bloating as well as abdominal pain.
Dogs with parvo will often become unusually weak, tired and become disinterested in their surroundings.
An early sign of parvo in dogs is a decreased or even complete loss of appetite and the hallmark symptoms of parvo are diarrhea that is severe, watery and even potentially bloody diarrhea as well as vomiting and the dogs poop or diarrhea will also sometimes have a foul odor to it.
Dogs with parvo will also often have a high fever initially, which then can drop to low body temperature as the parvo disease progresses in your dog.
Some dogs with parvo may also have signs of bloating and abdominal pain, including whining or have a reluctance to be touched in their stomach area.
As the dog experiences vomiting and diarrhea from the parvo, it can lead to rapid dehydration in the dog which is a serious complication of parvo.
Then as the parvo disease progresses in the dog and the dehydration in your dog gets worse, the heart rate of the dog will also often increase.
And the dog will also often have pale gums which can be a sign of anemia, which can occur as a result of the parvovirus.
And in severe cases of parvo, the dog's body temperature may even drop below normal body temperature and as it advances, the dog may even collapse due to the severity of the parvo virus.
It's critical that a dog with parvo seek medical attention with a vet if you can do so as they can sometimes but not always be saved.