Signs of bad health are the most important signs of the health status in your dogs. For  example, if your dog has continuous nasal discharge, it indicates the presence of nasal  congestion and if the discharge is thick, your dog may have pneumonia.

    If the dog vomits one or two times occasionally, this may not be taken as a serious sign of  bad health but if the dog continues this vomiting, then this is something significant to be  looked into.

    If the dog has continuous itching, then you need to check the dog by closer observation and  examination of skin, by separating the hair material especially in case of long haired breeds.  You may also come across a lot of ticks or lice on skin, which may look normal at a distance.

    If the dog passes loose stool for one or two times, there does not need to be concern,but if  there is continuous passing of loose stool, then the dog may suffer from bowel disorders. If the  dog does not pass stool for two to three days, the digestive upsets needs to be ruled out  carefully.

    Just patiently observe the dog’s walking movements and rule out any abnormal movements in  the dog. If the dog is limping, your dog may have a serious wound or disease in his foot. Also,  if the dog is older and reluctant to walk, as well as eating less along with repeated vomiting,  then health issues such as inflamation of the kidneys needs to be ruled out by your  veterinarian. 

    If there is whiteness in eyes, suspect  that may be a serious infection in the eye and  contact your veterinarian immediatly.  When the dog becomes anemic, the mucous membrane of the  eyes becomes paler and in severe cases, this may have wall white color. If your dog bites his  chain and owners or others, look for behavior disorders and rabies needs to be ruled out.